Update regex pattern documentation for denied paths in README

[mybuddyandrew]

Improve Documentation for Regex Patterns in 'Mission Control - Web'

This pull request updates the documentation related to regex patterns used for blocking specific routes in 'Mission Control - Web'. The enhancements include:

• Detailed Regex Examples: The regex patterns are now more detailed, covering use cases such as blocking entire namespaces (e.g., /admin/.*), specific controller actions (e.g., /users/edit), and API routes under a specific version (e.g., /api/v1/.*). These examples provide clear guidance on how to effectively configure the middleware to deny access to unwanted paths.

#41 (comment)

[lewispb]

Thanks for the PR @mybuddyandrew.

Three examples feels about right, but perhaps we can capture some more variety? I'm thinking examples where there's an ID in the middle of a path, or perhaps all paths ending in "/new".