Make CONTRIBUTING.md link to pull_request_template.md

Signed-off-by: Chris Hennick <[email protected]>

CONTRIBUTING.md

@@ -1,7 +1 @@
-Pull requests are welcome, but they're subject to some requirements:
-
-* They must build against the MSRV, the latest stable Rust version, and the nightly Rust version, both with `--no-default-features` and with `--all-features`.
-* They must pass fuzz tests (see the Actions tab).
-* Commit messages must conform to [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/) and start with 
-  one of the types specified by the [Angular convention](https://github.com/angular/angular/blob/22b96b9/CONTRIBUTING.md#type). 
-* All commits must be signed.
+Pull requests are welcome, but they're subject to some requirements that a lot of them don't meet. See https://github.com/zip-rs/zip2/raw/master/pull_request_template.md for details.