Rename main(Java).java to Plus One - Solution.java

Author: JRS296

Arrays & Strings/#66 - Plus One - Easy/main(Java).java renamed to Arrays & Strings/#66 - Plus One - Easy/Plus One - Solution.java

@@ -23,4 +23,4 @@ public int[] plusOne(int[] digits) {
 Memory Usage: 42.6 MB
 
 Simple and really efficient problem - O(n)
- */
+ */