message: Fix a typo in the config comments.
diff: @@ -393,7 +393,7 @@ message ConfigProto {
  // The first session created determines the number of threads in this pool.
  // All subsequent sessions reuse/share this one global pool.
  //
  - // There are notable exceptions to the default behavior describe above:
  + // There are notable exceptions to the default behavior described above:
  // 1. There is an environment variable for overriding this thread pool,
  // named TF_OVERRIDE_GLOBAL_THREADPOOL.
  // 2. When connecting to a server, such as a remote `tf.train.Server`
  