docs: `3.2` -> `3.3`

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171384 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LibTooling.rst b/docs/LibTooling.rst
index 5a9c579..f0a35d5 100644
--- a/docs/LibTooling.rst
+++ b/docs/LibTooling.rst
@@ -173,7 +173,7 @@
 
 Clang tools need their builtin headers and search for them the same way Clang
 does.  Thus, the default location to look for builtin headers is in a path
-``$(dirname /path/to/tool)/../lib/clang/3.2/include`` relative to the tool
+``$(dirname /path/to/tool)/../lib/clang/3.3/include`` relative to the tool
 binary.  This works out-of-the-box for tools running from llvm's toplevel
 binary directory after building clang-headers, or if the tool is running from
 the binary directory of a clang install next to the clang binary.