Change examples to md format to reduce dependences.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 23.92%. Comparing base (ea90f1a) to head (90cddee).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #185 +/- ## ======================================= Coverage 23.92% 23.92% ======================================= Files 9 9 Lines 1212 1212 ======================================= Hits 290 290 Misses 905 905 Partials 17 17 ``` | [Flag](https://app.codecov.io/gh/open-cluster-management-io/cluster-proxy/pull/185/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io) | Coverage Δ | | |---|---|---| | [unit](https://app.codecov.io/gh/open-cluster-management-io/cluster-proxy/pull/185/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io) | `23.92% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io#carryforward-flags-in-the-pull-request-comment) to find out more.

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