Rename the index to linkage types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76394 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LangRef.html b/docs/LangRef.html
index 1b9d6bf..84a1012 100644
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -22,20 +22,20 @@
       <li><a href="#modulestructure">Module Structure</a></li>
       <li><a href="#linkage">Linkage Types</a>
         <ol>
-          <li><a href="#linkage_private">private</a></li>
-          <li><a href="#linkage_linker_private">linker_private</a></li>
-          <li><a href="#linkage_internal">internal</a></li>
-          <li><a href="#linkage_available_externally">available_externally</a></li>
-          <li><a href="#linkage_linkonce">linkonce</a></li>
-          <li><a href="#linkage_common">common</a></li>
-          <li><a href="#linkage_weak">weak</a></li>
-          <li><a href="#linkage_appending">appending</a></li>
-          <li><a href="#linkage_externweak">extern_weak</a></li>
-          <li><a href="#linkage_linkonce">linkonce_odr</a></li>
-          <li><a href="#linkage_weak">weak_odr</a></li>
-          <li><a href="#linkage_external">externally visible</a></li>
-          <li><a href="#linkage_dllimport">dllimport</a></li>
-          <li><a href="#linkage_dllexport">dllexport</a></li>
+          <li><a href="#linkage_private">'<tt>private</tt>' Linkage</a></li>
+          <li><a href="#linkage_linker_private">'<tt>linker_private</tt>' Linkage</a></li>
+          <li><a href="#linkage_internal">'<tt>internal</tt>' Linkage</a></li>
+          <li><a href="#linkage_available_externally">'<tt>available_externally</tt>' Linkage</a></li>
+          <li><a href="#linkage_linkonce">'<tt>linkonce</tt>' Linkage</a></li>
+          <li><a href="#linkage_common">'<tt>common</tt>' Linkage</a></li>
+          <li><a href="#linkage_weak">'<tt>weak</tt>' Linkage</a></li>
+          <li><a href="#linkage_appending">'<tt>appending</tt>' Linkage</a></li>
+          <li><a href="#linkage_externweak">'<tt>extern_weak</tt>' Linkage</a></li>
+          <li><a href="#linkage_linkonce">'<tt>linkonce_odr</tt>' Linkage</a></li>
+          <li><a href="#linkage_weak">'<tt>weak_odr</tt>' Linkage</a></li>
+          <li><a href="#linkage_external">'<tt>externally visible</tt>' Linkage</a></li>
+          <li><a href="#linkage_dllimport">'<tt>dllimport</tt>' Linkage</a></li>
+          <li><a href="#linkage_dllexport">'<tt>dllexport</tt>' Linkage</a></li>
         </ol>
       </li>
       <li><a href="#callingconv">Calling Conventions</a></li>