[adminer] extraDeploy is not used even though it is documented

[amenophis]

Hi 👋
I'm trying to use the adminer chart, and it seems the extraDeploy documented value seems to used.

The only reference i see in the repo to extraDeploy is in the netbox chart.
Maybe something is missing in other charts ?

Could you have a look ?

Thanks 🙏

[amenophis]

I opened a PR with the missing part: #101