fix broken link


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10273 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/Stacker.html b/docs/Stacker.html
index 89fa414..e8d6808 100644
--- a/docs/Stacker.html
+++ b/docs/Stacker.html
@@ -1337,7 +1337,7 @@
     <li>Provide for I/O to arbitrary files instead of just stdin/stdout.</li>
     <li>Write additional built-in words.</li>
     <li>Write additional sample Stacker programs.</li>
-    <li>Add your own compiler writing experiences and tips in the <a href="lessons">
+    <li>Add your own compiler writing experiences and tips in the <a href="#lessons">
     Lessons I Learned About LLVM</a> section.</li>
 </ol>
 </div>