chore: readme with correct usage dependency (#11)

Author: vasco-santos

README.md

@@ -8,7 +8,7 @@ Leverage other peers in the network to perform Peer Routing calls.
 ## Example
 
 ```js
-const DelegatedPeerRouting = require('libp2p-delegated-routing')
+const DelegatedPeerRouting = require('libp2p-delegated-peer-routing')
 
 // default is to use ipfs.io
 const routing = new DelegatedPeerRouing()