Fix readme badges (#2085)

Author: sjrl

integrations/watsonx/README.md

@@ -1,7 +1,7 @@
 # watsonx-haystack
 
-[![PyPI - Version](https://img.shields.io/pypi/v/watsonx.svg)](https://pypi.org/project/watsonx)
-[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/watsonx.svg)](https://pypi.org/project/watsonx)
+[![PyPI - Version](https://img.shields.io/pypi/v/watsonx-haystack.svg)](https://pypi.org/project/watsonx-haystack)
+[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/watsonx-haystack.svg)](https://pypi.org/project/watsonx-haystack)
 
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