Update README.md

Author: wenbinf

README.md

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 # Podcast API Python Library
 
-[![Build Status](https://travis-ci.com/ListenNotes/python-api-python.svg?branch=main)](https://travis-ci.com/ListenNotes/python-api-python)
+[![Build Status](https://travis-ci.com/ListenNotes/podcast-api-python.svg?branch=main)](https://travis-ci.com/ListenNotes/podcast-api-python)
 
 The Podcast API Python library provides convenient access to the [Listen Notes Podcast API](https://www.listennotes.com/api/) from
 applications written in the Python language.