Tweak GitHub pull request template.

.github/pull_request_template.md

@@ -1,8 +1,8 @@
 ## Hold up!
 
-Thanks for your contribution! Unfortunately, we don't use GitHub pull requests
-to manage code contributions to this repository (and GitHub doesn't have any
-way to disable pull requests entirely). Instead, please see
-https://torsion.org/borgmatic/#contributing which provides full instructions
-on how to submit pull requests. You can even use your GitHub account to login.
+Thanks for your contribution. Unfortunately, we don't use GitHub pull requests to manage code contributions to this repository (and GitHub doesn't have any way to disable pull requests entirely). Instead, please see:
+
+https://torsion.org/borgmatic/#contributing
+
+... which provides full instructions on how to submit pull requests. You can even use your GitHub account to login.