Correct link regarding FAQ NAT install

Broken link, I presume this one was meant.

doc/faq.md

@@ -4,4 +4,4 @@ A. In general, if the tool ifconfig (or ipconfig) shows the assigned IP address
 
 **2. Clients could communicate well in room created at meet.jit.si . The same clients still could connect to my self-hosted instance but can neither hear nor see one another. What's wrong?**
 
-A. Most probably, the server is behind NAT. See this [resolved question](https://community.jitsi.org/t/cannot-see-video-or-hear-audio-on-self-hosted-instance/). You need to follow the steps detailed [here](https://github.com/jitsi/ice4j/blob/master/doc/quick-install.md#Advanced-configuration)
+A. Most probably, the server is behind NAT. See this [resolved question](https://community.jitsi.org/t/cannot-see-video-or-hear-audio-on-self-hosted-instance/). You need to follow the steps detailed [here](https://github.com/jitsi/jitsi-meet/blob/master/doc/quick-install.md#Advanced-configuration)