Merge pull request #2800 from noqcks/iam-grammar-issue

IAM Module: fixed grammatical issue in iam.py. exit -> exist.

cloud/amazon/iam.py

@@ -663,7 +663,7 @@ def main():
 
         elif state == 'update' and not user_exists:
             module.fail_json(
-                msg="The user %s does not exit. No update made." % name)
+                msg="The user %s does not exist. No update made." % name)
 
         elif state == 'absent':
             if user_exists: