Fix broken README badge (#359)

## Problem

CI Badge seems broken

## Solution

Remove it

## Type of Change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] This change requires a documentation update
- [ ] Infrastructure change (CI configs, etc)
- [x] Non-code change (docs, etc)
- [ ] None of the above: (explain here)

README.md

@@ -1,4 +1,5 @@
-# Pinecone Python Client · ![License](https://img.shields.io/github/license/pinecone-io/pinecone-python-client?color=orange) [![CI](https://github.com/pinecone-io/pinecone-python-client/actions/workflows/merge.yaml/badge.svg)](https://github.com/pinecone-io/pinecone-python-client/actions/workflows/merge.yaml)
+# Pinecone Python Client 
+![License](https://img.shields.io/github/license/pinecone-io/pinecone-python-client?color=orange) [![CI](https://github.com/pinecone-io/pinecone-python-client/actions/workflows/pr.yaml/badge.svg)](https://github.com/pinecone-io/pinecone-python-client/actions/workflows/pr.yaml)
 
 The official Pinecone Python client.