lib/scatterlist: fix sg_copy_buffer() kerneldoc

Add the missing closing parenthesis to the description for the to_buffer
parameter of sg_copy_buffer().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Akinobu Mita <akinobu.mita@gmail.com
Link: http://lkml.kernel.org/r/20200212084241.8778-1-geert+renesas@glider.beSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

lib/scatterlist.c

@@ -832,7 +832,7 @@ EXPORT_SYMBOL(sg_miter_stop);
  * @buflen:		 The number of bytes to copy
  * @skip:		 Number of bytes to skip before copying
  * @to_buffer:		 transfer direction (true == from an sg list to a
- *			 buffer, false == from a buffer to an sg list
+ *			 buffer, false == from a buffer to an sg list)
  *
  * Returns the number of copied bytes.
  *