Update markdown.snippets

Don't add a default protocol

Author: joshpetit

snippets/markdown.snippets

@@ -5,7 +5,7 @@
 # The suffix `c` stands for "Clipboard".
 
 snippet [
-	[${1:text}](https://${2:address})
+	[${1:text}](${2:address})
 snippet [*
 	[${1:link}](${2:`@*`})
 snippet [c