Update yum.py (#67252)

Move the simpler name list example to the top of EXAMPLES.
Those with v2.11 loop deprecation warnings will be looking for a solution.

lib/ansible/modules/packaging/os/yum.py

@@ -246,7 +246,15 @@ EXAMPLES = '''
     name: httpd
     state: latest
 
-- name: ensure a list of packages installed
+- name: install a list of packages (suitable replacement for 2.11 loop deprecation warning)
+  yum:
+    name:
+      - nginx
+      - postgresql
+      - postgresql-server
+    state: present
+
+- name: install a list of packages with a list variable
   yum:
     name: "{{ packages }}"
   vars:
@@ -316,14 +324,6 @@ EXAMPLES = '''
     name: sos
     disablerepo: "epel,ol7_latest"
 
-- name: Install a list of packages
-  yum:
-    name:
-      - nginx
-      - postgresql
-      - postgresql-server
-    state: present
-
 - name: Download the nginx package but do not install it
   yum:
     name: