Add missing translation

classes/framework.php

@@ -488,6 +488,7 @@ public function t($message, $replacements = array()) {
                 'Unable to parse JSON from the package: %fileName' => 'couldnotparsejsonfromzip',
                 'Could not parse post data.' => 'couldnotparsepostdata',
                 'The mbstring PHP extension is not loaded. H5P needs this to function properly' => 'nombstringexteension',
+                'Assistive Technologies label' => 'assistivetechnologieslabel',
             ];
             // @codingStandardsIgnoreEnd
         }

lang/en/hvp.php

@@ -476,4 +476,5 @@
 $string['completionpassdesc'] = 'Student must achieve a passing grade to complete this activity';
 $string['completionpass_help'] = 'If enabled, this activity is considered complete when the student receives a pass grade (as specified in the Grade section of the H5P activity settings) or higher.';
 $string['gradetopassnotset'] = 'This H5P activity does not yet have a grade to pass set. It may be set in the Grade section of the H5P activity settings.';
-$string['gradetopassmustbeset'] = 'Grade to pass cannot be zero as this H5P activity has its completion method set to require passing grade. Please set a non-zero value.';
+$string['gradetopassmustbeset'] = 'Grade to pass cannot be zero as this H5P activity has its completion method set to require passing grade. Please set a non-zero value.';
+$string['assistivetechnologieslabel'] = 'Assistive Technologies label';