docs: pod overrides, better install instructions, improved wording #1682

Job	Run time
Check if committed Helm charts are up to date	33s
Check if committed README is the one we would render from the available parts	20s
Run Cargo Deny (advisories)	38s
Run Cargo Deny (bans licenses sources)	37s
Run Clippy	32s
Run RustDoc	1m 2s
Run Cargo Udeps	1m 25s
Run Rustfmt	10s
Run Cargo Tests	32s
Select target helm repository based on action trigger	1s
All tests passed	1s
Package Charts, Build Docker Image and publish them - ubuntu-latest	9m 56s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 17s
Build and publish manifest list	53s
Run the OpenShift Preflight check on the published images	17s
	26m 14s

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