Update Building.md (#38)

FAQ.html contains the FAQ, no information there is given for reporting a bug.

Building.md

@@ -43,7 +43,7 @@ pacman -S git wget gcc gdb make cmake tar unzip zip curl jq python
 
 *You do not need to build Rack to build plugins if you use the Rack SDK.*
 
-*If the build fails for you, please [report the issue](FAQ.html#i-found-a-bug) to help the portability of Rack.*
+*If the build fails for you, please [report the issue](Issues.html) to help the portability of Rack.*
 
 Clone this repository with `git clone https://github.com/VCVRack/Rack.git` and `cd Rack`.
 Make sure there are no spaces in your absolute path, since this breaks the Makefile-based build system.