[PWGCF] multiharmonicCorrelations: Add nested loops for cross check

[pengchon]

No description provided.

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 50 warnings, 🔕 0 disabled

[vkucera]

@pengchon You PR title is too vague. Please read the contribution guidelines and update it accordingly.

[abilandz]

Thanks for fixing all problems with MegaLinter, some of which were not obivous.

Please add more verbosity and decription to the title of your next PRs, per vkucera's remark.

[vkucera]

@abilandz Please note that the PR title can be modified at any moment until the merge confirmation, so please do not merge a PR if you are aware that the title should be changed.

[abilandz]

@abilandz Please note that the PR title can be modified at any moment until the merge confirmation, so please do not merge a PR if you are aware that the title should be changed.

That is fine, but since the student has invested quite some time and effort to fix MegaLinter problems, I do not want to hold him back with such trivial things, as he has much more urgent checks to perform with the new code. On a side note, the title is perfectly fine and meaningful for people which work with correlations techniques.

We have acknowledged your remark.