Create 2215-find-the-difference-of-two-arrays.rs

[CarlosGuzman01]

• File(s) Modified: 2215-find_the_difference_of_two_arrays.rs
• Language(s) Used: rust
• Submission URL: https://leetcode.com/problems/find-the-difference-of-two-arrays/submissions/1834505717

[Ykhan799]

Do not use underscores, use hyphens instead when naming files.

Rename your file to match the naming standards, then I will merge your solution

[CarlosGuzman01]

done