docs: rename timestamp to created

Author: mgwozdz-unicon

docs/decisions/0022-competency-criteria-model.rst

@@ -181,21 +181,21 @@ Decision
       2. `competency_criteria_id`: Foreign key to `CompetencyCriterion.id`
       3. `user_id`: Foreign key pointing to user_id (presumably the learner's id, although it appears that it is possible for staff to get grades as well) in `auth_user` table
       4. `status`: Enumeration of “Demonstrated”, “AttemptedNotDemonstrated”, and “PartiallyAttempted”. This field should be very small and not varchar(100) as it will be part of an index.
-      5. `timestamp`: The timestamp at which the student's criterion status was set.
+      5. `created`: The timestamp at which the student's criterion status was set.
    2. Add a new database table for `student_competencycriteriagroupstatus` with these columns:
 
       1. `id`: unique primary key
       2. `competency_criteria_group_id`: Foreign key to `CompetencyCriteriaGroup.id`
       3. `user_id`: Foreign key pointing to user_id (presumably the learner's id, although it appears that it is possible for staff to get grades as well) in `auth_user` table
       4. `status`: Enumeration of “Demonstrated”, “AttemptedNotDemonstrated”, and “PartiallyAttempted”. This field should be very small and not varchar(100) as it will be part of an index.
-      5. `timestamp`: The timestamp at which the student's criteria-group status was set.
+      5. `created`: The timestamp at which the student's criteria-group status was set.
    3. Add a new database table for `student_competencystatus` with these columns:
 
       1. `id`: unique primary key
       2. `oel_tagging_tag_id`: Foreign key pointing to Tag id
       3. `user_id`: Foreign key pointing to user_id (presumably the learner's id, although it appears that it is possible for staff to get grades as well) in `auth_user` table
       4. `status`: Enumeration of “Demonstrated” and “PartiallyAttempted”. This field should be very small and not varchar(100) as it will be part of an index.
-      5. `timestamp`: The timestamp at which the student's competency status was set.
+      5. `created`: The timestamp at which the student's competency status was set.
 
 7. Delete protection boundaries