Docker container actions and service containers only work on 'ubuntu-latest' (#435)

Co-authored-by: Sergey Dolin <v-sedoli@micorosoft.com>
Co-authored-by: Lucas Costi <lucascosti@users.noreply.github.com>

data/reusables/github-actions/docker-container-os-support.md

@@ -2,7 +2,7 @@
 
 **Note:** If your workflows use Docker container actions or service containers, then you must use a Linux runner:
 
-* If you are using {% data variables.product.prodname_dotcom %}-hosted runners, you must use the `ubuntu-latest` runner.
+* If you are using {% data variables.product.prodname_dotcom %}-hosted runners, you must use an Ubuntu runner.
 * If you are using self-hosted runners, you must use a Linux machine as your runner and Docker must be installed.
 
 {% endnote %}