minor symfony#17109 [Workflow] symfony#16324 Sync workflow images with provided configuration on docs (andrew-demb)

This PR was merged into the 5.4 branch.

Discussion
----------

[Workflow] symfony#16324 Sync workflow images with provided configuration on docs

<!--

If your pull request fixes a BUG, use the oldest maintained branch that contains
the bug (see https://symfony.com/releases for the list of maintained branches).

If your pull request documents a NEW FEATURE, use the same Symfony branch where
the feature was introduced (and `6.x` for features of unreleased versions).

-->
Ref: symfony#16324
Actualize images according to provided workflow configuration in workflow documentation (https://symfony.com/doc/current/workflow.html#creating-a-workflow)

Commits
-------

3d3e393 symfony#16324 Sync workflow images with provided configuration on docs

Author: javiereguiluz