Format PR template with Prettier (#9615)

.github/PULL_REQUEST_TEMPLATE.md

@@ -9,16 +9,20 @@ https://petershaggynoble.github.io/SI-Sandbox/preview/
 **Issue:** closes #
 
 **Similarweb rank:**
-  <!-- The Similarweb rank can be retrieved at https://www.similarweb.com
-       Please see our contributing guidelines for more details on how we
-       assess a brand's popularity. -->
+
+<!--
+The Similarweb rank can be retrieved at https://www.similarweb.com
+Please see our contributing guidelines for more details on how we assess a brand's popularity.
+-->
 
 ### Checklist
-  - [ ] I updated the JSON data in `_data/simple-icons.json`
-  - [ ] I optimized the icon with SVGO or SVGOMG
-  - [ ] The SVG `viewbox` is `0 0 24 24`
+
+- [ ] I updated the JSON data in `_data/simple-icons.json`
+- [ ] I optimized the icon with SVGO or SVGOMG
+- [ ] The SVG `viewbox` is `0 0 24 24`
 
 ### Description
+
 <!--
 Anything relevant, for example:
   - Why did you pick the hex value?

.prettierignore

@@ -2,6 +2,7 @@
 # See the following thread for the discussion:
 #   https://github.com/simple-icons/simple-icons-font/pull/73
 *.md
+!.github/PULL_REQUEST_TEMPLATE.md
 
 # We use our own formatting for the data files.
 _data/simple-icons.json