twrpme: update irc link to zulip

Change-Id: Ideba82e506d9dbe9f2453ec31a6b0bb7faeff616
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-TWRP is an open source, community project. TWRP development is done by roughly 4 people at this point. We also have a large support community with many people who are willing to answer questions and help people with their devices either through our [IRC channel](http://webchat.freenode.net/?channels=twrp) or on forums like [xda-developers](http://forum.xda-developers.com/).
+TWRP is an open source, community project. TWRP development is done by roughly 4 people at this point. We also have a large support community with many people who are willing to answer questions and help people with their devices either through our [Zulip channel](https://rebrand.ly/teamwin-recovery-zulip-community) or on forums like [xda-developers](http://forum.xda-developers.com/).
 
 Team Win was originally formed to work on porting WiMAX to CM7 for the HTC EVO 4G. After our work on the EVO 4G we wanted to work on a project that would work on more devices than just the EVO 4G and we settled on working on a recovery. Today TWRP is the leading custom recovery for Android phones.