* updated the content of use s3 signed url to upload documents in the How To section
* addressed the comments and edited the document
* Addressed the comments and enhanced the doc grammar
* revert the docusaurus and versions file and edited the image name
* updated the formatting of serverside pagination section from the docs
* updated the introduction section
* restored docosaurus.config.js file and versions.json file
* updated the introductory para
