Updated contribution manual

CONTRIBUTING.md

@@ -5,6 +5,12 @@
 
 # Upgrading the Zigbee2mqtt version
 So you want to bump the zigbee2mqtt version because I'm too slow. Here's how:
-1. Change the version number in `zigbee2mqtt/Dockerfile`: `ENV ZIGBEE2MQTT_VERSION="$NEW_VERSION"`
-2. Change the version number in `zigbee2mqtt/config.json`: `"version": "$NEW_VERSION"`
-3. Add any new configuration options to `zigbee2mqtt/config.json` and `zigbee2mqtt-edge/config.json`.
+1. Change the version number in `zigbee2mqtt/config.json`: `"version": "$NEW_VERSION"`
+2. Commit the changes to `dev` branch
+3. Publish a new "Release". Very important you specify Target: dev. Example
+```
+Tag version: v1.17.1  @ Target: dev
+Release title: v1.17.1
+```
+4. When the pipelines finish the [build](https://dev.azure.com/zigbee2mqtt/Zigbee2mqtt%20Add-on/_build?definitionId=10) create a PR to `master`
+5. Use **Squash and Merge** option