fix broken GCC bugzilla link

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65858 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/FAQ.html b/docs/FAQ.html
index d155060..e372972 100644
--- a/docs/FAQ.html
+++ b/docs/FAQ.html
@@ -352,7 +352,7 @@
 </div>
 
 <div class="answer">
-<p>This is <a href="http://gcc.gnu.org/PR?13392">a bug in GCC</a>, and 
+<p>This is <a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13392">a bug in GCC</a>, and 
 affects projects other than LLVM.  Try upgrading or downgrading your GCC.</p>
 </div>