Edit or remove the warning message of docusaurus

[kittybest]

Prerequisites

Please answer the following question for yourself before submitting a feature request.

• [ ] I checked to make sure that this request has not already been filed

Motivation & Details

This message is kind of misleading, we actually are still updating the documents of v1.2, besides the latest version.

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Make sure that you have reviewed MACI's Contributor Guidelines

[ctrlc03]

I found this: https://github.com/facebook/docusaurus/blob/525b0c2b5b55cc965de92ddeaac79d6fe6c62aea/packages/docusaurus-theme-classic/src/theme/DocVersionSuggestions/index.tsx#L53 but couldn't find a way to actually fully customize the message