Documentation updates to use complete YAML : syntax instead of key=val syntax. Adjusted example to use "" where appropriate to pass YAML Syntax checker per Contribution guidelines.

See Issue [# 2879](https://github.com/ansible/ansible-modules-core/issues/2879)

lib/ansible/modules/cloud/digital_ocean/digital_ocean_domain.py

@@ -57,25 +57,28 @@ requirements:
 EXAMPLES = '''
 # Create a domain record
 
-- digital_ocean_domain: >
-      state=present
-      name=my.digitalocean.domain
-      ip=127.0.0.1
+- digital_ocean_domain:
+    state: present
+    name: my.digitalocean.domain
+    ip: 127.0.0.1
 
 # Create a droplet and a corresponding domain record
 
-- digital_ocean: >
-      state=present
-      name=test_droplet
-      size_id=1gb
-      region_id=sgp1
-      image_id=ubuntu-14-04-x64
+- digital_ocean:
+    state: present
+    name: test_droplet
+    size_id: 1gb
+    region_id: sgp1
+    image_id: ubuntu-14-04-x64
+
+
   register: test_droplet
 
-- digital_ocean_domain: >
-      state=present
-      name={{ test_droplet.droplet.name }}.my.domain
-      ip={{ test_droplet.droplet.ip_address }}
+- digital_ocean_domain:
+    state: present
+    name: "{{ test_droplet.droplet.name }}.my.domain"
+    ip: "{{ test_droplet.droplet.ip_address }}"
+
 '''
 
 import os