fix: update link for multihashes (#1975)

Author: Gozala

README.md

@@ -669,7 +669,7 @@ Aside from the default export, `ipfs` exports various types and utilities that a
 - [`PeerInfo`](https://www.npmjs.com/package/peer-info)
 - [`multiaddr`](https://www.npmjs.com/package/multiaddr)
 - [`multibase`](https://www.npmjs.com/package/multibase)
-- [`multihash`](https://www.npmjs.com/package/multihash)
+- [`multihash`](https://www.npmjs.com/package/multihashes)
 - [`multicodec`](https://www.npmjs.com/package/multicodec)
 - [`CID`](https://www.npmjs.com/package/cids)