docs: Update pull_request_template.md

Commit messages in PR no longer need to follow ConCom, since we now squash-merge PRs.

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

pull_request_template.md

@@ -30,7 +30,7 @@ These are our requirements for PRs, in addition to the usual functionality and r
   - `cargo fmt --check --all` must pass.
 - If the above checks force you to add a new `#[allow]` attribute, please place a comment on the same line or just above it, 
   explaining what the exception applies to and why it's needed.
-- Commit messages and the PR title must conform to [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/) and start 
+- The PR title 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).
 
 Thanks in advance for submitting a bug fix or proposed feature that meets these requirements!