ARROW-13455 [C++][Docs] Typo in RecordBatch::SetColumn

Fix typo in SetColumn docs

Closes #10810 from rvernica/patch-3

Authored-by: rvernica <rvernica@gmail.com>
Signed-off-by: Antoine Pitrou <antoine@python.org>

cpp/src/arrow/record_batch.h

@@ -129,7 +129,7 @@ class ARROW_EXPORT RecordBatch {
   virtual Result<std::shared_ptr<RecordBatch>> AddColumn(
       int i, std::string field_name, const std::shared_ptr<Array>& column) const;
 
-  /// \brief Replace a column in the table, producing a new Table
+  /// \brief Replace a column in the record batch, producing a new RecordBatch
   virtual Result<std::shared_ptr<RecordBatch>> SetColumn(
       int i, const std::shared_ptr<Field>& field,
       const std::shared_ptr<Array>& column) const = 0;