Get rid of some g3doc warnings.

--
MOS_MIGRATED_REVID=113782855
diff --git a/examples/cpp/README.md b/examples/cpp/README.md
index fba7143..64d8a06 100644
--- a/examples/cpp/README.md
+++ b/examples/cpp/README.md
@@ -1,4 +1,3 @@
-C++ Examples
-============
+# C++ Examples
 
 These examples demonstrate building C++ binaries, libraries, and tests.