Use brew formula to install libraqm

Author: radarhere

docs/installation/building-from-source.rst

@@ -148,13 +148,7 @@ Many of Pillow's features require external libraries:
     The easiest way to install external libraries is via `Homebrew
     <https://brew.sh/>`_. After you install Homebrew, run::
 
-        brew install libjpeg libtiff little-cms2 openjpeg webp
-
-    To install libraqm on macOS use Homebrew to install its dependencies::
-
-        brew install freetype harfbuzz fribidi
-
-    Then see ``depends/install_raqm_cmake.sh`` to install libraqm.
+        brew install libjpeg libraqm libtiff little-cms2 openjpeg webp
 
 .. tab:: Windows