fix: Examples Hyperlink Fix

[OseSem]

Summary

In README.md the you can find more examples in the examples directory. In PyPi the hyperlink will redirect you to https://pypi.org/project/disnake/examples/ instead of https://github.com/DisnakeDev/disnake/tree/master/examples. This will fix it by adding that url.

Checklist

• If code changes were made, then they have been tested
  • I have updated the documentation to reflect the changes
  • I have formatted the code properly by running pdm lint
  • I have type-checked the code by running pdm pyright
• This PR fixes an issue
• This PR adds something new (e.g. new method or parameters)
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, ...)

[shiftinv]

lgtm, thanks