Update issue templates

Author: Lucus16

.github/ISSUE_TEMPLATE/formatting-suggestion.md

@@ -0,0 +1,27 @@
+---
+name: Formatting suggestion
+about: For suggesting formatting improvements.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+### Description
+
+
+
+### Small example input
+
+```
+```
+
+### Expected output
+
+```
+```
+
+### Actual output
+
+```
+```