fix(TargetChange): use RichText instead of plaintext

Author: stonebuzz

inc/targetchange.class.php

@@ -664,11 +664,11 @@ public function save(PluginFormcreatorFormAnswer $formanswer): ?CommonDBTM {
          $data[$changeField] = $this->prepareTemplate(
             Sanitizer::unsanitize(__($this->fields[$changeField], $domain)) ?? '',
             $formanswer,
-            $changeField == 'content' // only content supports rich text
+            true // all *content supports rich text
          );
          $data[$changeField] = $data[$changeField] ?? '';
 
-         $data[$changeField] = $formanswer->parseTags($data[$changeField], $this, $changeField == 'content');
+         $data[$changeField] = $formanswer->parseTags($data[$changeField], $this, true); // all *content supports rich text
       }
 
       $data['_users_id_recipient'] = $formanswer->fields['requester_id'];