Update liveness and readiness probe doc

Romuald Atchadé - OOO until Jan 11th, 2026requested to merge
update-liveness-readiness-probe-docs into main

What does this MR do?

Update liveness and readiness probes documentation

Why was this MR needed?

To reflect the change made in Increase default period for livenessProbe (!511 - merged) • Romuald Atchadé - OOO until Jan 11th, 2026 • 17.9

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