osx_defaults - doc tweaks (#60881)

* [osx_default] We are looking for the "defaults" executable, not "osx_defaults"

* [osx_default] Add example for setting system wide default

lib/ansible/modules/system/osx_defaults.py

@@ -70,7 +70,7 @@ options:
     default: present
   path:
     description:
-      - The path in which to search for C(osx_defaults).
+      - The path in which to search for C(defaults).
     type: str
     default: /usr/bin:/usr/local/bin
 notes:
@@ -92,6 +92,13 @@ EXAMPLES = r'''
     value: Centimeters
     state: present
 
+- osx_defaults:
+    domain: /Library/Preferences/com.apple.SoftwareUpdate
+    key: AutomaticCheckEnabled
+    type: int
+    value: 1
+  become: yes
+
 - osx_defaults:
     domain: com.apple.screensaver
     host: currentHost