Update README.md (#377)

<!-- This is an auto-generated comment: release notes by openai -->
### Summary by OpenAI

```markdown
### Documentation:
- Updated the section title from "Install" to "Install instructions" in README.md.
- Enhanced installation instructions and examples for better user understanding.

```

> 🎉 Here's to clarity, here's to light,  
> With updated docs, we set things right.  
> Instructions clear as the summer sky,  
> Making installations a breeze, oh my! 🚀📚

<!-- end of auto-generated comment: release notes by openai -->

Author: guritfaq

README.md

@@ -41,13 +41,13 @@ To use this tool, you need to add the provided YAML file to your repository and
 For more information on usage, examples, contributing, and FAQs, you can refer to the sections below. 
 
 - [Overview](#overview)
-- [Install](#install)
+- [Install instructions](#install-instructions)
 - [Conversation with OpenAI](#conversation-with-openai)
 - [Examples](#examples)
 - [Contribute](#contribute)
 - [FAQs](#faqs)
 
-## Install
+## Install instructions
 ai-pr-reviewer runs as a GitHub Action. 
 Add the below file to your repository at
 `.github/workflows/openai-pr-reviewer.yml`
@@ -75,7 +75,7 @@ jobs:
   review:
     runs-on: ubuntu-latest
     steps:
-      - uses: fluxninja/openai-pr-reviewer@latest
+      - uses: coderabbitai/ai-pr-reviewer@latest
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
@@ -172,7 +172,7 @@ To ignore a PR, add the following keyword in the PR description:
 
 
 ## Examples
-Some of the reviews done by pr-reviewer
+Some of the reviews done by ai-pr-reviewer
 
 ![PR Summary](./docs/images/openai-pr-summary.png)
 
@@ -239,7 +239,7 @@ jobs:
   review:
     runs-on: ubuntu-latest
     steps:
-      - uses: fluxninja/openai-pr-reviewer@latest
+      - uses: coderabbitai/ai-pr-reviewer@latest
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}