file name palindrome.test.js should be Palindrome.test.js to follow UpperCamelCase

[AbdulAhadKhan0308]

file is at Recursive/test/palindrome.test.js

[appgurueu]

Makes me question our contribution guideline. Usually file name conventions dictate lower snake case; UpperCamelCase is reserved for classes. Files exporting single functions should probably not be using UpperCamelCase but rather lowerCamelCase (like the funcs) or lower_snake_case.

[raklaptudirm]

This repository uses UpperCamelCase for all JavaScript files.