Apply new format to snippets and template

snippets/split_lines.md

@@ -5,9 +5,8 @@ tags: string,beginner
 
 Splits a multiline string into a list of lines.
 
-Use `s.split()` and `'\n'` to match line breaks and create a list.
-
-[`str.splitlines()`](https://docs.python.org/3/library/stdtypes.html#str.splitlines) provides similar functionality to this snippet.
+- Use `s.split()` and `'\n'` to match line breaks and create a list.
+- [`str.splitlines()`](https://docs.python.org/3/library/stdtypes.html#str.splitlines) provides similar functionality to this snippet.
 
 ```py
 def split_lines(s):