diff --git a/_sources/index.rst.txt b/_sources/index.rst.txt
index 59235e4..caa50b5 100644
--- a/_sources/index.rst.txt
+++ b/_sources/index.rst.txt
@@ -9,7 +9,7 @@ kaldifeat
 
 .. toctree::
    :maxdepth: 2
-   :caption: Contents:
+   :caption: Contents
 
    intro
    installation
diff --git a/genindex.html b/genindex.html
index a9bd66b..55bf119 100644
--- a/genindex.html
+++ b/genindex.html
@@ -38,7 +38,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul>
 <li class="toctree-l1"><a class="reference internal" href="intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="installation.html">Installation</a></li>
diff --git a/index.html b/index.html
index 3502cca..71c62c6 100644
--- a/index.html
+++ b/index.html
@@ -40,7 +40,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul>
 <li class="toctree-l1"><a class="reference internal" href="intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="installation.html">Installation</a></li>
@@ -74,7 +74,7 @@
   <section id="kaldifeat">
 <h1>kaldifeat<a class="headerlink" href="#kaldifeat" title="Permalink to this heading"></a></h1>
 <div class="toctree-wrapper compound">
-<p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+<p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul>
 <li class="toctree-l1"><a class="reference internal" href="intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="installation.html">Installation</a><ul>
diff --git a/installation.html b/installation.html
index fed87a5..605bb43 100644
--- a/installation.html
+++ b/installation.html
@@ -41,7 +41,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul class="current">
 <li class="toctree-l1"><a class="reference internal" href="intro.html">Introduction</a></li>
 <li class="toctree-l1 current"><a class="current reference internal" href="#">Installation</a><ul>
diff --git a/intro.html b/intro.html
index 067fbb5..5e3e39e 100644
--- a/intro.html
+++ b/intro.html
@@ -41,7 +41,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul class="current">
 <li class="toctree-l1 current"><a class="current reference internal" href="#">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="installation.html">Installation</a></li>
diff --git a/search.html b/search.html
index f4ce732..c47614e 100644
--- a/search.html
+++ b/search.html
@@ -41,7 +41,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul>
 <li class="toctree-l1"><a class="reference internal" href="intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="installation.html">Installation</a></li>
diff --git a/usage/fbank.html b/usage/fbank.html
index 3d98b93..5eec75d 100644
--- a/usage/fbank.html
+++ b/usage/fbank.html
@@ -41,7 +41,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul class="current">
 <li class="toctree-l1"><a class="reference internal" href="../intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../installation.html">Installation</a></li>
diff --git a/usage/fbank_options.html b/usage/fbank_options.html
index 2053e61..ef23168 100644
--- a/usage/fbank_options.html
+++ b/usage/fbank_options.html
@@ -41,7 +41,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul class="current">
 <li class="toctree-l1"><a class="reference internal" href="../intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../installation.html">Installation</a></li>
diff --git a/usage/index.html b/usage/index.html
index ba13fc8..5c6c44e 100644
--- a/usage/index.html
+++ b/usage/index.html
@@ -41,7 +41,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul class="current">
 <li class="toctree-l1"><a class="reference internal" href="../intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../installation.html">Installation</a></li>
diff --git a/usage/online_fbank.html b/usage/online_fbank.html
index f214223..8c6f1d5 100644
--- a/usage/online_fbank.html
+++ b/usage/online_fbank.html
@@ -40,7 +40,7 @@
   </form>
 </div>
         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
-              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
+              <p class="caption" role="heading"><span class="caption-text">Contents</span></p>
 <ul class="current">
 <li class="toctree-l1"><a class="reference internal" href="../intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../installation.html">Installation</a></li>