Remove semicolons

Remove semicolon in head
Remove semicolon in initial
Remove semicolons in tail

snippets/tail.md

@@ -13,6 +13,6 @@ def tail(lst):
 ```
 
 ```py
-tail([1, 2, 3]); # [2,3]
-tail([1]); # [1]
+tail([1, 2, 3]) # [2,3]
+tail([1]) # [1]
 ```