build(gha): rename DOCKER_BUILD_NO_SUMMARY to DOCKER_BUILD_SUMMARY_DI…

…SABLE

Signed-off-by: David Karlsson <[email protected]>

content/build/ci/github-actions/build-summary.md

@@ -66,15 +66,15 @@ select the item in the list.
 
 ## Disable job summary
 
-To disable job summaries, set the `DOCKER_BUILD_NO_SUMMARY` environment
+To disable job summaries, set the `DOCKER_BUILD_SUMMARY_DISABLE` environment
 variable in the YAML configuration for your build step:
 
 ```yaml {hl_lines=5}
       -
         name: Build
         uses: docker/docker-build-push-action@v6
         env:
-          DOCKER_BUILD_NO_SUMMARY: true
+          DOCKER_BUILD_SUMMARY_DISABLE: true
         with:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}