doc(xerces): update installation instruction when using homebrew
@@ -68,7 +68,7 @@ the mount point, then it uses the mount point's name instead.
- CMake 3.6 or a copy of `FindXercesC.cmake` in
`/usr/share/cmake-3.0/Modules/`
-To include this plugin in a homebrew installation run `brew install elektra --with-dep-plugins`
+To include this plugin in a homebrew installation run `brew tap elektrainitiative/elektra` followed by `brew install elektrainitiative/elektra/elektra --with-xerces`
## Limitations
