message: Fix typo in comment TFE_Execute
diff: @@ -542,7 +542,7 @@ void TFE_Execute(TFE_Op* op, TFE_TensorHandle** retvals, int* num_retvals,
  // WARNING: kernel->Run utilizes the FunctionLibraryRuntime
  // (ctx->func_lib(device)), which in turn holds a pointer to func_lib_def,
  // which is GUARDED_BY(ctx->functions_mu). But knowledge of the implementation
  - // of FunctionLibraryRuntime tells use that func_lib_def is not accessed by
  + // of FunctionLibraryRuntime tells us that func_lib_def is not accessed by
  // FunctionLibraryRuntime::Run(), so there is no thread-safety concern here.
  // This is quite subtle. Re-work things to make this better? (Would it make
  // sense for FunctionLibraryRuntime to ensure thread-safe access to
  