Rename 17-Letter-Combinations-of-a-Phone-Number.kt to 0017-letter-combinations-of-a-phone-number.kt

Author: a93a

Diff for: kotlin/17-Letter-Combinations-of-a-Phone-Number.kt renamed to kotlin/0017-letter-combinations-of-a-phone-number.kt

@@ -31,4 +31,4 @@ class Solution {
         dfs()
         return resultantList
     }
-}
+}