docs: clang-format is coming down the pike, mention it

llvm-svn: 171380
diff --git a/clang/docs/Tooling.rst b/clang/docs/Tooling.rst
index 1e84817..b2884b6 100644
--- a/clang/docs/Tooling.rst
+++ b/clang/docs/Tooling.rst
@@ -94,7 +94,7 @@
 
 * Syntax checking (:program:`clang-check`)
 * Automatic fixing of compile errors (:program:`clang-fixit`)
-* Automatic code formatting
+* Automatic code formatting (:program:`clang-format`)
 * Migration tools for new features in new language standards
 * Core refactoring tools