upgrade node + docusaurus

[glicht]

Status

Ready

Related Issues

Related: #616

Description

• upgrade node + docusaurus
• add API docs to reference index

Screenshots

Paste here any images that will help the reviewer

[xsoar-bot]

Preview Site Available

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[lgtm-com]

This pull request introduces 2 alerts when merging 84e0bf3 into a16ccec - view on LGTM.com

new alerts:

• 2 for Unused variable, import, function or class

[xsoar-bot]

Preview Site Available

Congratulations! The automatic build has completed succesfully.
A preview site is available at: https://pull-request-689--demisto-content-docs.netlify.app

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Important: Make sure to inspect your changes at the preview site.

[glicht]

@sserrata fyi

[xsoar-bot]

Preview Site Available

Congratulations! The automatic build has completed succesfully.
A preview site is available at: https://pull-request-689--demisto-content-docs.netlify.app

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Important: Make sure to inspect your changes at the preview site.

[sserrata]

Looks great and that build time is 🔥 - nice work!

[xsoar-bot]

Production Site Updated

Congratulations! The automatic build has completed succesfully.
The production site of our docs has been updated. You can view it at: https://xsoar.pan.dev