Fix spelling mistakes (comments only) (#25564)

Original Author : klemens <ka7@github.com>

Taking over previous PR as per
https://github.com/ansible/ansible/pull/23644#issuecomment-307334525

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

lib/ansible/modules/cloud/cloudstack/cs_instance.py

@@ -872,7 +872,7 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
 
     def stop_instance(self):
         instance = self.get_instance()
-        # in check mode intance may not be instanciated
+        # in check mode instance may not be instanciated
         if instance:
             if instance['state'].lower() in ['stopping', 'stopped']:
                 return instance
@@ -893,7 +893,7 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
 
     def start_instance(self):
         instance = self.get_instance()
-        # in check mode intance may not be instanciated
+        # in check mode instance may not be instanciated
         if instance:
             if instance['state'].lower() in ['starting', 'running']:
                 return instance
@@ -914,7 +914,7 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
 
     def restart_instance(self):
         instance = self.get_instance()
-        # in check mode intance may not be instanciated
+        # in check mode instance may not be instanciated
         if instance:
             if instance['state'].lower() in [ 'running', 'starting' ]:
                 self.result['changed'] = True
@@ -936,7 +936,7 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
     def restore_instance(self):
         instance = self.get_instance()
         self.result['changed'] = True
-        # in check mode intance may not be instanciated
+        # in check mode instance may not be instanciated
         if instance:
             args = {}
             args['templateid'] = self.get_template_or_iso(key='id')

lib/ansible/modules/cloud/cloudstack/cs_loadbalancer_rule_member.py

@@ -82,7 +82,7 @@ extends_documentation_fragment: cloudstack
 '''
 
 EXAMPLES = '''
-# Add VMs to an exising load balancer
+# Add VMs to an existing load balancer
 - local_action:
     module: cs_loadbalancer_rule_member
     name: balance_http

lib/ansible/modules/cloud/cloudstack/cs_pod.py

@@ -38,7 +38,7 @@ options:
     required: true
   id:
     description:
-      - uuid of the exising pod.
+      - uuid of the existing pod.
     default: null
     required: false
   start_ip:

lib/ansible/modules/cloud/cloudstack/cs_vpc.py

@@ -161,7 +161,7 @@ region_level_vpc:
   type: boolean
   sample: true
 restart_required:
-  description: "Wheter the VPC router needs a restart or not."
+  description: "Whether the VPC router needs a restart or not."
   returned: success
   type: boolean
   sample: true

lib/ansible/modules/cloud/cloudstack/cs_zone.py

@@ -38,7 +38,7 @@ options:
     required: true
   id:
     description:
-      - uuid of the exising zone.
+      - uuid of the existing zone.
     default: null
     required: false
   state: