Hint for setting "HTML tracking code" (#6580)

protected/humhub/modules/admin/models/forms/StatisticSettingsForm.php

@@ -45,6 +45,18 @@ class StatisticSettingsForm extends \yii\base\Model
         ];
     }
 
+    /**
+     * @inheritdoc
+     */
+    public function attributeHints()
+    {
+        return [
+            'trackingHtmlCode' => Yii::t('AdminModule.settings', 'Inserted script tags must contain a nonce. e.g. {code}', [
+                'code' => '<code>&lt;script nonce={{nonce}}&gt;</code>'
+            ]),
+        ];
+    }
+
     /**
      * Saves the form
      *