Fix gender pronouns and the odd typo (#31709)

lib/ansible/modules/cloud/amazon/sts_assume_role.py

@@ -47,7 +47,7 @@ options:
     default: null
   mfa_serial_number:
     description:
-      - he identification number of the MFA device that is associated with the user who is making the AssumeRole call.
+      - The identification number of the MFA device that is associated with the user who is making the AssumeRole call.
     required: false
     default: null
   mfa_token:

lib/ansible/modules/cloud/docker/docker_login.py

@@ -68,7 +68,7 @@ options:
   state:
     version_added: '2.3'
     description:
-      - This controls the current state of the user. C(present) will login in a user, C(absent) will log him out.
+      - This controls the current state of the user. C(present) will login in a user, C(absent) will log them out.
       - To logout you only need the registry server, which defaults to DockerHub.
       - Before 2.1 you could ONLY log in.
       - docker does not support 'logout' with a custom config file.

lib/ansible/modules/cloud/ovirt/README.rst

@@ -71,7 +71,7 @@ methods:
 
         # The build method builds the entity we want to create.
         # Always be sure to build only the parameters the user specified
-        # in his yaml file, so we don't change the values which we shouldn't
+        # in their yaml file, so we don't change the values which we shouldn't
         # change. If you set the parameter to None, nothing will be changed.
         def build_entity(self):
             return otypes.Cluster(