Update relative links to absolute links in chatrooms about camper-gitter-bot

[alayek]

@Rafase282 @koustuvsinha @BerkeleyTrue @raisedadead FYI

[Rafase282]

👍 This should be bumped in the priority queue.Who could I talk to so I can get some quick walk-through on how the bot work so I can try and get a fix?

[raisedadead]

As per a comment by @abhisekp

we need this:

https://github.com/FreeCodeCamp/camperbot/blob/master/lib/utils/TextLib.js#L5

TextLib.fixRelativeLink = function fixRelativeLink(wikiContent, baseUrl = 'http://github.com/FreeCodeCamp/FreeCodeCamp/wiki/') {
    const linkMatchRegExp = /\[.+\]\((.+)\)/g; // @FIXME needs to check if relative url
    return wikiContent.replace(linkMatchRegExp, baseUrl + '$1');
}

and a call to it in https://github.com/FreeCodeCamp/camperbot/blob/master/lib/bot/KBase.js#L47

TextLib.fixRelativeLink(subset);

to fix the links.

[Rafase282]

#65
#66

This are the changes as I though they should be, need feedback.