One more small fix to documentation

llvm-svn: 33463
diff --git a/llvm/docs/BytecodeFormat.html b/llvm/docs/BytecodeFormat.html
index e65ee0c..4c1f64b 100644
--- a/llvm/docs/BytecodeFormat.html
+++ b/llvm/docs/BytecodeFormat.html
@@ -1492,9 +1492,13 @@
 2=Appending, 3=Internal, 4=LinkOnce, 5=DllImport, 6=DllExport<sup>1</sup></td>
     </tr>
     <tr>
-      <td><a href="#bit">bit(16-31)</a></td>
+      <td><a href="#bit">bit(16-18)</a></td>
       <td class="td_left">Visibility style: 0=Default, 1=Hidden.</td>
     </tr>
+    <tr>
+      <td><a href="#bit">bit(19-31)</a></td>
+      <td class="td_left>Currently unassigned.</td>
+    </tr>
   </tbody>
 </table>