Add monday.com community server to README

[sakce]

Description

Adds a link to the Monday.com community server to the README.

Server Details

• Server: Monday.com MCP Server

Motivation and Context

Allows users to interact with Monday.com boards and items, making it easy to create and update stories/tasks.

How Has This Been Tested?

All tools have been tested in Claude Desktop on Mac.

Breaking Changes

N/A

Types of changes

• 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 change)
• Documentation update

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options