String extraction at input value attributes is done with single quotes

lms/templates/dashboard.html

@@ -368,7 +368,7 @@
       <input name="course_id" id="email_settings_course_id" type="hidden" />
       <label>${_("Receive course emails")} <input type="checkbox" id="receive_emails" name="receive_emails" /></label>
       <div class="submit">
-        <input type="submit" id="submit" value="${_("Save Settings")}" />
+        <input type="submit" id="submit" value="${_('Save Settings')}" />
       </div>
     </form>
 
@@ -393,7 +393,7 @@
       <input name="course_id" id="unenroll_course_id" type="hidden" />
       <input name="enrollment_action" type="hidden" value="unenroll" />
       <div class="submit">
-        <input name="submit" type="submit" value="${_("Unregister")}" />
+        <input name="submit" type="submit" value="${_('Unregister')}" />
       </div>
     </form>