update language for view user grants to differentiate between account user and account owner

Author: hzoppetti

openapi.yaml

@@ -2088,11 +2088,14 @@ paths:
       - Account
       summary: View User's grants
       description: >
-        Returns the full grants structure for this User. This includes all
-        entities on the Account alongside what level of access this User has
-        to each of them. Individual users may view their own grants at the
-        [/profile/grants](/api/v4/profile-grants)
-        endpoint, but will not see entities that they have no access to.
+        Returns the full grants structure for the specified account User
+        (other than the account owner, see below). This includes all entities
+        on the Account alongside what level of access this User has to each of them.
+
+
+        The current authenticated User, including the account owner, may view their
+        own grants at the [/profile/grants](/api/v4/profile-grants)
+        endpoint, but will not see entities that they do not have access to.
       operationId: getUserGrants
       x-linode-cli-action: grants
       x-linode-cli-skip: true