Bump cmake version in GettingStarted.md

Co-authored-by: Anthony Latsis <aqamoss3fan2010@gmail.com>

Author: aenewton

Diff for: docs/HowToGuides/GettingStarted.md

@@ -187,7 +187,7 @@ toolchain as a one-off, there are a couple of differences:
 
 ### Spot check dependencies
 
-* Run `cmake --version`; this should be 3.19.6 or higher.
+* Run `cmake --version`; this should be at least 3.19.6 (3.22.2 if you want to generate an Xcode project on macOS).
 * Run `python3 --version`; check that this succeeds.
 * Run `ninja --version`; check that this succeeds.
 * If you installed and want to use Sccache: Run `sccache --version`; check