Document fetching plugins

README.md

@@ -11,8 +11,13 @@ api_features:
 This Docker image is exactly the same as [Maubot's official image](https://mau.dev/maubot/maubot/container_registry/6?orderBy=NAME&sort=desc&search[]=), but with the `plugins/` directory copied into `/data/plugins`.
 
 ## Issuing a new release
+First fetch plugins:
 
-Edit the `version` file so that it contains the version you want to release. The versioning scheme used is: whatever Maubot's version is, with an extra decimal. For example, if Maubot's version (in `Dockerfile`) is `v0.4.2`, the `version` file would contain something like:
+```shell
+bin/fetch-plugins
+```
+
+Then edit the `version` file so that it contains the version you want to release. The versioning scheme used is: whatever Maubot's version is, with an extra decimal. For example, if Maubot's version (in `Dockerfile`) is `v0.4.2`, the `version` file would contain something like:
 
 ```
 v0.4.2.0