docs: add JSDoc pages to README.md (#3204)

Signed-off-by: Ivaylo Nikolov <ivaylo.nikolov@limechain.tech>

Author: ivaylonikolov7

README.md

@@ -2,6 +2,7 @@
 
 [![](https://img.shields.io/discord/373889138199494658)](https://discord.com/channels/373889138199494658/616725732650909710)
 [![Docs](https://img.shields.io/badge/docs-%F0%9F%93%84-blue)](https://docs.hedera.com/hedera/getting-started/environment-set-up)
+[![JSDoc](https://img.shields.io/badge/jsdoc-%F0%9F%93%84-green)](https://hiero-ledger.github.io/hiero-sdk-js/)
 [![NPM Package](https://img.shields.io/npm/v/@hashgraph/sdk.svg)](https://www.npmjs.org/package/@hashgraph/sdk)
 
 > The JavaScript SDK for interacting with a Hiero based network