DOCS: standardize on EXAMPLES (a.k.a. Docs-JumboPatch JetLag Edition)

Migrated all examples: in DOCUMENTATION=''' string to standalone EXAMPLES=''' string
  Added deprecation warning to moduledev.rst and remove deprecated example from it
  Fixed up a few typos and uppercased some acronyms.
  add consistency to how EXAMPLES are formatted

library/inventory/add_host

@@ -19,11 +19,15 @@ options:
     - The groups to add the hostname to, comma separated.
     required: false
 author: Seth Vidal
-examples:
-  - description: add host to group 'just_created' with variable foo=42
-    code: add_host hostname=${ip_from_ec2} groups=just_created foo=42
-  - description: add a host with a non-standard port local to your machines
-    code: add_host hostname='${new_ip}:${new_port}' 
-  - description: add a host alias that we reach through a tunnel
-    code: add_host hostname=${new_ip} ansible_ssh_host=${inventory_hostname} ansible_ssh_port=${new_port}' 
+'''
+
+EXAMPLES = '''
+# add host to group 'just_created' with variable foo=42
+- add_host: hostname=${ip_from_ec2} groups=just_created foo=42
+
+# add a host with a non-standard port local to your machines
+-  add_host: hostname='${new_ip}:${new_port}' 
+
+# add a host alias that we reach through a tunnel
+-  add_host: hostname=${new_ip} ansible_ssh_host=${inventory_hostname} ansible_ssh_port=${new_port}' 
 '''

library/inventory/group_by

@@ -13,11 +13,13 @@ options:
     - The variables whose values will be used as groups
     required: true
 author: Jeroen Hoekx
-examples:
-  - description: Create groups based on the machine architecture
-    code: group_by key=${ansible_machine}
-  - description: Create groups like 'kvm-host'
-    code: group_by key=${ansible_virtualization_type}-${ansible_virtualization_role}
 notes:
   - Spaces in group names are converted to dashes '-'.
 '''
+
+EXAMPLES = '''
+# Create groups based on the machine architecture
+-  group_by: key=${ansible_machine}
+# Create groups like 'kvm-host'
+-  group_by: key=${ansible_virtualization_type}-${ansible_virtualization_role}
+'''