message: Reword comment in eager runtime.
diff: @@ -377,8 +377,8 @@ class EagerContext : public ImmediateExecutionContext, public core::RefCounted {
  // class/struct.
  //
  // Enables the eager context to communicate with remote devices. When
  - // initializing with this method, this context will be the master context,
  - // which will kill all its slaves in shutdown.
  + // initializing with this method, this context will be the primary context,
  + // which will kill all its remote contexts in shutdown.
  //
  // - server: A ServerInterface that exports the tensorflow.WorkerService.
  // Note that this class expects the server to already have been started.
  