MDL-62939 user: Fix field type of the user profile description

As this is an editor element field, the it is supposed to be PARAM_RAW.
Otherwise it cleans-up certain non-HTML syntax such as Markdown
blockquote characters.

user/editlib.php

@@ -340,7 +340,7 @@ function useredit_shared_definition(&$mform, $editoroptions, $filemanageroptions
     }
 
     $mform->addElement('editor', 'description_editor', get_string('userdescription'), null, $editoroptions);
-    $mform->setType('description_editor', PARAM_CLEANHTML);
+    $mform->setType('description_editor', PARAM_RAW);
     $mform->addHelpButton('description_editor', 'userdescription');
 
     if (empty($USER->newadminuser)) {