update PR Github template, Github does not respect soft line breaks i…

…n certain cases

More info: isaacs/github#1013

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,19 +1,14 @@
-* [ ] ❗ Have you followed the guidelines in the
-      [Contributing to DVC](https://dvc.org/doc/user-guide/contributing/core)
-      list?
+* [ ] ❗ Have you followed the guidelines in the [Contributing to DVC](https://dvc.org/doc/user-guide/contributing/core) list?
 
-* [ ] 📖 Check this box if this PR **does not** require
-      [documentation](https://dvc.org/doc) updates, or if it does **and** you
-      have created a separate PR in
-      [dvc.org](https://github.com/iterative/dvc.org)
-      with such updates (or at least opened an issue about it in that repo).
-      Please link below to your PR (or issue) in the
-      [dvc.org](https://github.com/iterative/dvc.org) repo.
+* [ ] 📖 Check this box if this PR **does not** require [documentation](https://dvc.org/doc) updates,
+      or if it does **and** you have created a separate PR in [dvc.org](https://github.com/iterative/dvc.org) with
+      such updates (or at least opened an issue about it in that repo). Please link
+      below to your PR (or issue) in the [dvc.org](https://github.com/iterative/dvc.org) repo.
 
-* [ ] ❌ Have you checked DeepSource, CodeClimate, and other sanity checks
-      below? We consider their findings recommendatory and don't expect
-      everything to be addresses. Please review them carefully and fix those
-      that actually improve code or fix bugs.
+* [ ] ❌ Have you checked DeepSource, CodeClimate, and other sanity checks below?
+      We consider their findings recommendatory and don't expect everything to be
+      addresses. Please review them carefully and fix those that actually improve
+      code or fix bugs.
 
 Thank you for the contribution - we'll try to review it as soon as possible. 🙏