Fix line endings on pull request template

.github/pull_request_template.md

@@ -1,29 +1,29 @@
-<!-- Thank you for your contribution to this addon! -->
-
-<!-- rtl_433_mqtt_autodiscovery/rtl_433_mqtt_hass.py is maintained upstream at
-     merbanan/rtl_433. In general, changes to that file should be filed as a
-     pull request there first.
-     -->
-
-<!-- Please open normal feature and bug fix requests against the "next" branch.
-     This allows us to merge changes without immediately sending the change to
-     addon users.
-     -->
-
-## Summary
-
-<!-- Write a summary of what you're trying to solve, with links to any relevant
-     issues, and how this PR solves it.
-     -->
-
-## Alternatives Considered
-
-<!-- Are there other ways to add the feature or solve the bug you considered?
-     Why didn't you pursue them further?
-     -->
-
-## Testing Steps
-
-1. First...
-2. Then...
-3. You should see... (screenshots or console text are helpful)
+<!-- Thank you for your contribution to this addon! -->
+
+<!-- rtl_433_mqtt_autodiscovery/rtl_433_mqtt_hass.py is maintained upstream at
+     merbanan/rtl_433. In general, changes to that file should be filed as a
+     pull request there first.
+     -->
+
+<!-- Please open normal feature and bug fix requests against the "next" branch.
+     This allows us to merge changes without immediately sending the change to
+     addon users.
+     -->
+
+## Summary
+
+<!-- Write a summary of what you're trying to solve, with links to any relevant
+     issues, and how this PR solves it.
+     -->
+
+## Alternatives Considered
+
+<!-- Are there other ways to add the feature or solve the bug you considered?
+     Why didn't you pursue them further?
+     -->
+
+## Testing Steps
+
+1. First...
+2. Then...
+3. You should see... (screenshots or console text are helpful)