fix a broken link (#670)

Author: remore

documentation/docs/fastly:kv-store/KVStore/KVStore.mdx

@@ -8,7 +8,7 @@ pagination_prev: null
 
 The **`KVStore` constructor** lets you connect your Compute@Edge application to a Fastly KV store.
 
-A Fastly KV store is a persistent, globally consistent key-value store. See [Data stores for Fastly services](https://developer.fastly.com/learning/concepts/kv-stores/#kv-stores) for initialization and usage details.
+A Fastly KV store is a persistent, globally consistent key-value store. See [Data stores for Fastly services](https://developer.fastly.com/learning/concepts/edge-state/data-stores#kv-stores) for initialization and usage details.
 
 >**Note**: Can only be used when processing requests, not during build-time initialization.