chore(doc): Update Percona installation

[ranjithwingrider]

• Update Percona installation using Percona operator

Signed-off-by: Ranjith R ranjith.raveendran@mayadata.io

[netlify[bot]]

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:hammer: Explore the source changes: 4a2ded430bc2ffff5353f3c77b870debe5a921fd

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[kmova]

@ranjithwingrider - lgtm. Can we also get @nareshdesh to check this one, please.