Improve Javascript SDK documentation

[yashtandon113]

Link to the documentation page or resource

https://antmedia.io/docs/guides/developer-sdk-and-api/sdk-integration/javascript-sdk/

Describe the bug

• Improve the current documentation as per the latest version of AMS.
• We can also think about versioning this documentation to make it more user-friendly. We can check its feasibility.

[mustafaboleken]

https://github.com/ant-media/ant-media-documentation/pull/321