Minor - Add comment about Google Translate API key for text2speech feature - refs #1956

documentation/changelog.html

@@ -893,7 +893,7 @@
 
     <h3>Known issues</h3>
     <ul aria-role="log" aria-live="off">
-        <li>(<a href="https://github.com/chamilo/chamilo-lms/commit/a285f48555774f1ef2df4df4b9b27c32187b07c0">a285f485</a> - <a href="https://github.com/chamilo/chamilo-lms/issues/1956">GH#1956</a>) Document: Add note about text-to-speech being broken in 1.11.4</li>
+        <li>(<a href="https://github.com/chamilo/chamilo-lms/commit/a285f48555774f1ef2df4df4b9b27c32187b07c0">a285f485</a> - <a href="https://github.com/chamilo/chamilo-lms/issues/1956">GH#1956</a>) Document: Text-to-speech feature is broken due to the services providers not allowing the service for free anymore. See configuration.dist.php for the API key to use Google Translate. Pediaphon will be removed.</li>
         <li>Several issues have been reported migrating from 1.9 to 1.11.4. Some have been fixed in 1.11.6, but did not have the capacity (in terms of human resources) to review the migration process in-depth. Please make sure you undertake any critical production-environment migration with a specialist. Try Chamilo Official Providers, for example.</li>
     </ul>
     </div>

main/install/configuration.dist.php

@@ -702,7 +702,10 @@ $_configuration['gradebook_badge_sidebar'] = [
 // Send score in percentage in the exam result notification
 //$_configuration['send_notification_score_in_percentage'] = false;
 
-// Google translate key
+// Google translate key (for the text2speech feature in the documents tool)
+// To get it, go to https://console.cloud.google.com/apis/library, create or
+// use your own project, then search for "speech" and follow the instructions
+// This service has a cost above 60 minutes of use.
 //$_configuration['translate_app_google_key'] = '';