docs(Template): update location of PR template (#655)

Author: arriolac

.github/pull_request_template.md

@@ -0,0 +1,11 @@
+Thank you for opening a Pull Request!
+
+---
+
+Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
+- [ ] Make sure to open a GitHub issue as a bug/feature request before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
+- [ ] Ensure the tests and linter pass
+- [ ] Code coverage does not decrease (if any source code was changed)
+- [ ] Appropriate docs were updated (if necessary)
+
+Fixes #<issue_number_goes_here> 🦕