MDL-74435 core_user: behat test polish and fixes

user/tests/behat/filter_trim.feature

@@ -6,9 +6,9 @@ Feature: Trim entered user filters
 
   Background:
     Given the following "users" exist:
-      | username | firstname | lastname | email | idnumber |
-      | teacher1 | Teacher  | 1 | teacher@example.com  | 0000002 |
-      | student1 | Student1 | 1 | student1@example.com | 0000003 |
+      | username | firstname | lastname | email               |
+      | teacher1 | Teacher   | 1        | teacher@example.com |
+      | student1 | Student   | 1        | student@example.com |
     And I log in as "admin"
     And I navigate to "Users > Accounts > Browse list of users" in site administration
 
@@ -17,10 +17,10 @@ Feature: Trim entered user filters
     When I set the field "id_realname_op" to "contains"
     And I set the field "id_realname" to " Teacher "
     And I press "Add filter"
-    # We should see the teacher user, with the trimmmed string present.
+    # We should see the teacher user, with the trimmed string present.
     Then I should see "User full name contains \"Teacher\""
     And I should see "Teacher" in the "users" "table"
-    And I should not see "Student1" in the "users" "table"
+    And I should not see "Student" in the "users" "table"
 
   @javascript
   Scenario: Filtering username - with case "contains" and a whitespace string