docs: modify readme

Author: KazuCocoa

README.md

@@ -419,6 +419,8 @@ $ DRY_RUN=1 ./release.sh
 $ ./release.sh # release
 ```
 
+If the `pypi` was not able to publish with user name and password, please try out `-u` and `-p` option by yourself with `twine` such as `twine upload -u <name> -p <pass> dist/Appium-Python-Client-4.1.0.tar.gz`.
+
 ## License
 
 Apache License v2