fix: typo in RoaringPositionBitmap deletion vector note (apache#632)

Author: zhjwpku

src/iceberg/deletes/roaring_position_bitmap.h

@@ -42,9 +42,9 @@ namespace iceberg {
 /// maintained to store positions for that key.
 ///
 
-/// \note This class is used to represent deletion vectors.  The Puffin puffin
-/// reader/write handle adding the additional required framing (length prefix, magic,
-/// magic bytes, CRC-32) for  `deletion-vector-v1` persistence.
+/// \note This class is used to represent deletion vectors. The Puffin reader/writer
+/// handle adding the additional required framing (length prefix, magic bytes, CRC-32)
+/// for `deletion-vector-v1` persistence.
 class ICEBERG_EXPORT RoaringPositionBitmap {
  public:
   /// \brief Maximum supported position (aligned with the Java implementation).