Rollup merge of #155194 - davidkna:man-version, r=clubby789

Fix manpage version replacement and use verbose version

- Fix a bug where `t!(fs::copy(&page_src, &page_dst))` was called after`fs::write`, silently overwriting the substituted content with the original template (restoring the `<INSERT VERSION HERE>` placeholder verbatim) (Related rust-lang/rust#93685)
- Use `rust_info().version()` instead of the bare version number, so the man page now includes the full version string with commit hash and date

Author: JonathanBrouwer