Buildify the world

Change-Id: I41c06a3f567bc45d401386cc32d9c40cb6ed95d8
diff --git a/third_party/flatbuffers/build_defs.bzl b/third_party/flatbuffers/build_defs.bzl
index 6ac1d87..f4c1dc7 100644
--- a/third_party/flatbuffers/build_defs.bzl
+++ b/third_party/flatbuffers/build_defs.bzl
@@ -282,7 +282,7 @@
         been parsed. As such, we just force the user to manually specify
         things.
     """
-    python_files = ["%s/%s.py" % (namespace.replace('.', '/'), table) for table in tables]
+    python_files = ["%s/%s.py" % (namespace.replace(".", "/"), table) for table in tables]
 
     srcs_lib = "%s_srcs" % (name)
     flatbuffer_library_public(