Correct < and > to &lt; and &gt;. Thanks to Samuel Harrington for pointing this out!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@200048 91177308-0d34-0410-b5e6-96231b3b80d8

www/diagnostics.html

@@ -316,7 +316,7 @@ forgetting a ; after a struct definition much better than GCC.</p>
   a&lt;int&gt; c;
   $ <span class="cmd">gcc-4.9 t.cc</span>
   t.cc:4:8: error: invalid declarator before 'c'
-   a<int> c;
+   a&lt;int&gt; c;
            ^
   $ <span class="cmd">clang t.cc</span>
   <span class="loc">t.cc:3:12:</span> <span class="err">error:</span> <span class="msg">expected ';' after struct</span>