Update cloudflare.md

[tobiabocchi]

Hey! I was trying out external-dns using cloudflare. I followed your docs and managed to deploy it successfully on my k3s cluster. While reading the docs and copying pasting the yaml files I noticed there was some inconsistencies with the indentation.. I am no kubernetes expert, I just fixed the problems that were not allowing me to deploy this service and checked the files using yamllint.com While I was at it I also noticed a few errors on the syntax highlighting for code blocks, some had shell where the content was yaml, I fixed those too.. I hope this helps, thank you for this amazing project!

Description

Fixes #ISSUE

Checklist

• [ ] Unit tests updated
• [ ] End user documentation updated

[linux-foundation-easycla[bot]]

• :white_check_mark:login: tobiabocchi / (8728b25f716e2b4bd2b97f4bd1bb875b187fe782)

The committers listed above are authorized under a signed CLA.

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[k8s-ci-robot]

Hi @tobiabocchi. Thanks for your PR.

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[mloiseleur]

Thanks @tobiabocchi, you're right. It's far better with correct indentation :+1:. /lgtm /approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mloiseleur

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