fix: update export (#387)

`import { kadDHT } from '@libp2p/kad-dht'`

Author: achingbrain

README.md

@@ -47,10 +47,10 @@ The libp2p-kad-dht module offers 3 APIs: Peer Routing, Content Routing and Peer
 
 ```js
 import { createLibp2pNode } from 'libp2p'
-import { kadDht } from '@libp2p/kad-dht'
+import { kadDHT } from '@libp2p/kad-dht'
 
 const node = await createLibp2pNode({
-  dht: kadDht()
+  dht: kadDHT()
   //... other config
 })
 await node.start()

src/index.ts

@@ -90,6 +90,6 @@ class KadDHT extends DualKadDHT {
   }
 }
 
-export function kadDht (init?: KadDHTInit): (components: KadDHTComponents) => DualKadDHT {
+export function kadDHT (init?: KadDHTInit): (components: KadDHTComponents) => DualKadDHT {
   return (components: KadDHTComponents) => new KadDHT(components, init)
 }