Grammar improvement in gitlab flow intro doc
What does this MR do?
Fixes a grammar mistake in the Gitlab flow documentation.
Are there points in the code the reviewer needs to double check?
No code is affected.
Why was this MR needed?
To have a high quality documentation.
Screenshots (if relevant)
n/a
Does this MR meet the acceptance criteria?
What are the relevant issue numbers?
Issue #28696 (closed)
Closes #28696 (closed)