docs(configuration): fix closing punctuation for matches in examples

[MountainGod2]

Summary

Changed two instances of: matches = "sub/**` to fix unterminated string errors in config examples.

error: Failed to parse: `pyproject.toml`
  Caused by: TOML parse error at line 33, column 19
   |
33 | matches = "sub/**`
   |                   ^
invalid basic string, expected `"`