MDL-78542 mod_url: clicktoopen lang string fix

- Improve the grammatical structure of the lang string.
- Remove the mention of "link", for sighted users, it should already
be obvious that it's a link. For screen reader users, screen readers
already announce links. So it would be confusing for them to hear
something like "Click 'Moodle.org, link' link to open resource"

mod/url/lang/en/url.php

@@ -23,7 +23,7 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-$string['clicktoopen'] = 'Click {$a} link to open resource.';
+$string['clicktoopen'] = 'Click on {$a} to open the resource.';
 $string['configdisplayoptions'] = 'Select all options that should be available, existing settings are not modified. Hold CTRL key to select multiple fields.';
 $string['configframesize'] = 'When a web page or an uploaded file is displayed within a frame, this value is the height (in pixels) of the top frame (which contains the navigation).';
 $string['configrolesinparams'] = 'Should customised role names (from the course settings) be available as variables for URL parameters?';

mod/url/tests/behat/url_activity_completion.feature

@@ -31,7 +31,9 @@ Feature: View activity completion information in the URL resource
       | completionview | 1                   |
       | display        | 0                   |
     When I am on the "Music history" "url activity" page logged in as teacher1
-    Then "Music history" should have the "View" completion condition
+    Then "Music history" "link" should exist
+    And I should see "Click on Music history to open the resource."
+    And "Music history" should have the "View" completion condition
 
   Scenario: View automatic completion items in automatic display mode as student
     Given the following "activity" exists: