[DOCS] Fix typo in gateway allocator comment (#60563)

server/src/main/java/org/elasticsearch/gateway/GatewayAllocator.java

@@ -271,7 +271,7 @@ public class GatewayAllocator implements ExistingShardsAllocator {
 
         @Override
         protected AsyncShardFetch.FetchResult<NodeStoreFilesMetadata> fetchData(ShardRouting shard, RoutingAllocation allocation) {
-            // explicitely type lister, some IDEs (Eclipse) are not able to correctly infer the function type
+            // explicitly type lister, some IDEs (Eclipse) are not able to correctly infer the function type
             Lister<BaseNodesResponse<NodeStoreFilesMetadata>, NodeStoreFilesMetadata> lister = this::listStoreFilesMetadata;
             AsyncShardFetch<NodeStoreFilesMetadata> fetch = asyncFetchStore.computeIfAbsent(shard.shardId(),
                     shardId -> new InternalAsyncFetch<>(logger, "shard_store", shard.shardId(),