Updated path to clang.cpp in build documentation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43564 91177308-0d34-0410-b5e6-96231b3b80d8

www/get_involved.html

@@ -70,7 +70,7 @@ If you would like to check out and build the project, the current scheme is:<br>
 	<ul>
 		<li>'<tt>touch empty.c; gcc -v empty.c -fsyntax-only</tt>' to get the path.
 		<li>Look for the comment "FIXME: temporary hack:
-		hard-coded paths" in <tt>Driver/clang.cpp</tt> and
+		hard-coded paths" in <tt>clang/Driver/clang.cpp</tt> and
 		change the lines below to include that path.
 	</ul>
 	<li>Build clang</li>