Add issue for roo comments that link threads instead of comments

[pmdevita]

Example, something like https://www.reddit.com/r/subreddit/comments/10kaent/thing/ instead of https://www.reddit.com/r/subreddit/comments/10kaent/thing/ghijkl

A new issue should be created and appended to the master list. Then in the check_errors function, the comment_url object should be checked for having a comment id. This check should only be applied to roos newer than March 1st, 2021 due to some concerns with older roos. Then, strings should be added to the ModIssueStrings and WarnIssues classes. Finally, a test case should be created as a part of the process/check_errors test cases