fix comments

src/Storages/HDFS/StorageHDFS.h

@@ -150,7 +150,7 @@ private:
     std::unique_ptr<ReadBuffer> read_buf;
     std::unique_ptr<QueryPipeline> pipeline;
     std::unique_ptr<PullingPipelineExecutor> reader;
-    /// OnCancel and generate can be called concurrently.
+    /// onCancel and generate can be called concurrently.
     std::mutex reader_mutex;
     String current_path;
 

src/TableFunctions/TableFunctionS3Cluster.h

@@ -13,7 +13,7 @@ namespace DB
 class Context;
 
 /**
- * s3 cluster(cluster_name, source, [access_key_id, secret_access_key,] format, structure)
+ * s3cluster(cluster_name, source, [access_key_id, secret_access_key,] format, structure)
  * A table function, which allows to process many files from S3 on a specific cluster
  * On initiator it creates a connection to _all_ nodes in cluster, discloses asterics
  * in S3 file path and dispatch each file dynamically.