BreedBase User manual not showing updated Field Book Chapter.

[hkmanching]

Not sure what happened to the updated doc, but not showing on site and cannot find in pull requests.

[lukasmueller]

was merged only in the local branch which needs to be merged into master (Amber)

[lukasmueller]

A pull request was created using for the topic/manual_update branch -

[lukasmueller]

fixed by #5826