adding JSDOCS for the following files BoyerMoore checkRearrangedPalin…

[mohmmadAyesh]

…drome CheckPalindrome

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Describe your change:

• [ ] Add an algorithm?
• [ ] Fix a bug or typo in an existing algorithm?
• [ x] Documentation change?

Checklist:

• [ x] I have read CONTRIBUTING.md.
• [ x] This pull request is all my own work -- I have not plagiarized.
• [ x] I know that pull requests will not be merged if they fail the automated tests.
• [ ] This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• [x ] All new JavaScript files are placed inside an existing directory.
• [ x] All filenames should use the UpperCamelCase (PascalCase) style. There should be no spaces in filenames. Example:UserProfile.js is allowed but userprofile.js,Userprofile.js,user-Profile.js,userProfile.js are not
• [ x] All new algorithms have a URL in their comments that points to Wikipedia or another similar explanation.
• [ x] If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.
• HI i tried to add JSDOCS to files missing it in String Folder this was part of solving issue #1342 `Fixes

  1342

[mohmmadAyesh]

I ll try to combine batch all PRS into one after I fix and do your suggested changes and feedback I was thought It was good to seperate for every folder, Ill combine them later thanks for feedback

[mohmmadAyesh]

this is branch is merged to PR-fix-docs