update toc
diff --git a/_includes/toc.html b/_includes/toc.html
index aab3774..f1a2797 100644
--- a/_includes/toc.html
+++ b/_includes/toc.html
@@ -158,10 +158,10 @@
     </div>
   </div>
 
-  <p id="quantiles-&-histograms">
-    <a data-toggle="collapse" class="menu collapsed" href="#collapse_quantiles_&_histograms">Quantiles & Histograms</a>
+  <p id="quantiles-and-histograms">
+    <a data-toggle="collapse" class="menu collapsed" href="#collapse_quantiles_and_histograms">Quantiles And Histograms</a>
   </p>
-  <div class="collapse" id="collapse_quantiles_&_histograms">
+  <div class="collapse" id="collapse_quantiles_and_histograms">
     <li><a href="{{site.docs_dir}}/Quantiles/QuantilesOverview.html">Quantiles Overview</a></li>
     <li><a href="{{site.docs_dir}}/Quantiles/QuantilesAccuracy.html">Quantiles Accuracy and Size</a></li>
     <li><a href="{{site.docs_dir}}/Quantiles/QuantilesJavaExample.html">Quantiles Sketch Java Example</a></li>
@@ -216,10 +216,10 @@
     <li><a href="{{site.docs_dir}}/CommandLine/CommandLine.html">Creating Command Line Executables</a></li>
   </div>
 
-  <p id="who-uses-&-license">
-    <a data-toggle="collapse" class="menu collapsed" href="#collapse_who_uses_&_license">Who Uses & License</a>
+  <p id="who-uses-and-license">
+    <a data-toggle="collapse" class="menu collapsed" href="#collapse_who_uses_and_license">Who Uses And License</a>
   </p>
-  <div class="collapse" id="collapse_who_uses_&_license">
+  <div class="collapse" id="collapse_who_uses_and_license">
     <li><a href="{{site.docs_dir}}/WhoUses.html">Who Uses</a></li>
     <li><a href="/LICENSE.html">License</a></li>
   </div>