Remove unnecessary `:meth:` parentheses

# Documentation

Follow up with #123492 and sphinx-lint's [issue](https://github.com/sphinx-contrib/sphinx-lint/issues/114).
It's suggested that the unnecessary parentheses with meth role should also be fixed ([ref](https://github.com/sphinx-doc/sphinx/issues/12847#issuecomment-2321749168)). 



### Linked PRs
* gh-123518
* gh-123576
* gh-123577