[docs] adds link to colima disk resize tutorial (ddev#4690) [skip ci]

Author: riconeitzel

docs/content/users/install/docker-installation.md

@@ -28,7 +28,7 @@ You’ll need a Docker provider on your system before you can [install DDEV](dde
     When your computer restarts, you’ll need to `colima start` again. This will eventually be automated in later versions of Colima.
 
     !!!tip "Colima disk allocation"
-        We recommend allocating lots of storage for Colima because there’s no way to increase the size later. You can reduce usage with `ddev clean`, and kill off disk images with `docker rm -f $(docker ps -aq) && docker rmi -f $(docker images -q)`. If you have to rebuild your Colima instance, use the technique described below for migrating from Docker Desktop.
+        We recommend allocating lots of storage for Colima because there’s no easy way to increase the size later (see [GitHub comment](https://github.com/abiosoft/colima/issues/398#issuecomment-1449801811) for a step-by-step guide to resize disk images with `qemu`). You can reduce usage by running `ddev clean`, and killing off disk images by running `docker rm -f $(docker ps -aq) && docker rmi -f $(docker images -q)`. If you have to rebuild your Colima instance, use the technique described below for migrating from Docker Desktop.
 
     !!!warning "Docker contexts let the Docker client point at the right Docker server"
         Colima activates its own Docker context to prevent conflicts with Docker Desktop. If you run `docker context ls`, you’ll see a list of available contexts where the currently-active one is indicated with a `*`—which will be `colima` after you’ve started it. You can change to the default (Docker Desktop) with `docker context use default` or change back with `docker context use colima`. This means you can run Docker Desktop and Colima at the same time, but be mindful of which context you’re pointing at!