Merge topic 'doc-preset-example-v3' into release-3.21

2114d717 Help: Fix preset example cmakeMinimumRequired

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kyle Edwards <kyle.edwards@kitware.com>
Merge-request: !6333

Help/manual/presets/example.json

@@ -2,7 +2,7 @@
   "version": 3,
   "cmakeMinimumRequired": {
     "major": 3,
-    "minor": 20,
+    "minor": 21,
     "patch": 0
   },
   "configurePresets": [