message: Fix link to BUILD file in android readme.
diff: @@ -164,7 +164,7 @@ download-models.gradle.
  **Optional**: If you wish to place the models in your assets manually, remove
  all of the `model_files` entries from the `assets` list in `tensorflow_demo`
  -found in the `[BUILD](BUILD)` file. Then download and extract the archives
  +found in the [`BUILD`](BUILD#L92) file. Then download and extract the archives
  yourself to the `assets` directory in the source tree:
  ```bash
  