Added Kiwi IRC links to IRC channel mentions
Added Kiwi IRC links to IRC channel mentions

Added links for the IRC channels mentioned which take the user to an interface provided by [Kiwi IRC](https://kiwiirc.com/) so that users who don't know how to use IRC can get connected easier.
Slightly changed wording of the Fedora mention to make it sound like it's okay to ask for help there first if the issue is shared between Korora and Fedora, instead of just for things that are strictly related to Fedora.
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