Add Abfallwirtschaft Kreis Plön to working ics examples (#1549)

* Add Abfallwirtschaft Kreis Plön to working ics examples

* renamed (to URL) + added yaml + ./update_docu_links.py

---------

Co-authored-by: Benjamin Angerer <benjamin.angerer@beanova.de>
Co-authored-by: 5ila5 <5ila5@users.noreply.github.com>

doc/ics/kreis_ploen_de.md

@@ -0,0 +1,25 @@
+# Abfallwirtschaft Kreis Plön
+
+Abfallwirtschaft Kreis Plön is supported by the generic [ICS](/doc/source/ics.md) source. For all available configuration options, please refer to the source description.
+
+
+## How to get the configuration arguments
+
+- Goto <https://www.kreis-ploen.de/Bürgerservice/Termine-Müllabfuhr/> and select your location.
+- Select `Jahreskalender` as view
+- Choose the types of waste you need
+- Right-click on `Export in Kalenderanwendung` and copy link address.
+- Replace the `url` in the example configuration with this link.
+- Replace the year field in the url with `{%Y}`.
+
+## Examples
+
+### Bendfeld
+
+```yaml
+waste_collection_schedule:
+  sources:
+    - name: ics
+      args:
+        url: https://www.kreis-ploen.de/output/abfall_export.php?csv_export=1&mode=vcal&ort=2156.6&strasse=2156.84.1&vtyp=4&vMo=1&vJ={%Y}&bMo=12
+```