Docs: Addition of more prominent link to docker conf (#46504) (#47822)

* Docs: Addition of more prominent link to docker conf

Saw a comment on Reddit indicating a lack of information - docs were available, just a little hard to find.

Added a note pointing our community to where they might find docker image configuration help.

* Update docs/sources/installation/docker.md

Co-authored-by: Christopher Moyer <35463610+chri2547@users.noreply.github.com>

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
Co-authored-by: Christopher Moyer <35463610+chri2547@users.noreply.github.com>
(cherry picked from commit 67ff5f5815)

Co-authored-by: Petros Kolyvas <code@petros.io>

docs/sources/installation/docker.md

@@ -16,6 +16,8 @@ You can install and run Grafana using the official Docker images. Our docker ima
 
 Each edition is available in two variants: Alpine and Ubuntu. See below.
 
+For documentation regarding the configuration of a docker image, refer to [configure a Grafana Docker image](https://grafana.com/docs/grafana/latest/administration/configure-docker/).
+
 This topic also contains important information about [migrating from earlier Docker image versions](#migrate-from-previous-docker-containers-versions).
 
 > **Note:** You can use [Grafana Cloud](https://grafana.com/products/cloud/features/#cloud-logs) to avoid the overhead of installing, maintaining, and scaling your observability stack. The free forever plan includes Grafana, 10K Prometheus series, 50 GB logs, and more.[Create a free account to get started](https://grafana.com/auth/sign-up/create-user?pg=docs-grafana-install&plcmt=in-text).