comment fix

beacon_node/beacon_chain/src/light_client_server_cache.rs

@@ -239,7 +239,7 @@ fn is_latest_finality_update<T: EthSpec>(
     }
 }
 
-// Implements spec priorization rules:
+// Implements spec prioritization rules:
 // > Full nodes SHOULD provide the LightClientOptimisticUpdate with the highest attested_header.beacon.slot (if multiple, highest signature_slot)
 //
 // ref: https://github.com/ethereum/consensus-specs/blob/113c58f9bf9c08867f6f5f633c4d98e0364d612a/specs/altair/light-client/full-node.md#create_light_client_optimistic_update