Documentation cleanup: escape # character in a Doxygen comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158775 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Lex/HeaderMap.h b/include/clang/Lex/HeaderMap.h
index 08bc5b6..107408d 100644
--- a/include/clang/Lex/HeaderMap.h
+++ b/include/clang/Lex/HeaderMap.h
@@ -26,7 +26,7 @@
   struct HMapHeader;
 
 /// This class represents an Apple concept known as a 'header map'.  To the
-/// #include file resolution process, it basically acts like a directory of
+/// \#include file resolution process, it basically acts like a directory of
 /// symlinks to files.  Its advantages are that it is dense and more efficient
 /// to create and process than a directory of symlinks.
 class HeaderMap {