feat: improve the npm/yarn installation instruction

[eriveltonelias]

Before:

After:

[satya164]

Thanks for the PR.

--save is not necessary when running npm as it adds the dependency to package.json like yarn for a while now. Can you remove the addition of --save?

[eriveltonelias]

--save is not necessary when running npm as it adds the dependency to package.json like yarn for a while now. Can you remove the addition of --save?

Yes, done :)

[slorber]

FYE we may add this plugin to docusaurus repo: facebook/docusaurus#3469

[eriveltonelias]

will be amazing @slorber, because right now we're using a copy/paste code from docusaurus core.

I just subscribed for this plugin PR and definitely, I want to import that from docusaurus when is available to use.