Updated Detecting changes in HTML page sources (markdown)

Detecting-changes-in-HTML-page-sources.md

@@ -7,4 +7,6 @@ For example, the HTML response of web shops like https://www.campuspoint.de cont
 * In the General tab, prepend the target URL with `source:` (example: `source:https://www.campuspoint.de/mobile/notebooks/lenovo/thinkpad-t-serie/thinkpad-t14s.html`)
 * In the Request tab, choose the "Basic fast Plaintext/HTTP Client" fetch method
 * Choose a suitable trigger in the Filters & Triggers tab, for example the regex-based "Extract text" one.
-  * Example: use `/"product_count":(\d+)/i` to check when campuspoint.de adds new models of a certain laptop series to their inventory.
+  * Example: use `/"product_count":(\d+)/i` to check when campuspoint.de adds new models of a certain laptop series to their inventory.
+
+more at https://changedetection.io/tutorial/source-code-monitor-how-get-alerts-changes-html-source-code