kfifo: fix typos in kernel-doc

Obviously:
"This macro finish" -> "This macro finishes"
and similar.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: Stefani Seibold <stefani@seibold.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20240405060826.2521-9-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/kfifo.h

@@ -585,7 +585,7 @@ __kfifo_uint_must_check_helper( \
  * @buf: pointer to the storage buffer
  * @n: max. number of elements to get
  *
- * This macro get some data from the fifo and return the numbers of elements
+ * This macro gets some data from the fifo and returns the numbers of elements
  * copied.
  *
  * Note that with only one concurrent reader and one concurrent
@@ -612,7 +612,7 @@ __kfifo_uint_must_check_helper( \
  * @n: max. number of elements to get
  * @lock: pointer to the spinlock to use for locking
  *
- * This macro get the data from the fifo and return the numbers of elements
+ * This macro gets the data from the fifo and returns the numbers of elements
  * copied.
  */
 #define	kfifo_out_spinlocked(fifo, buf, n, lock) \
@@ -745,7 +745,7 @@ __kfifo_int_must_check_helper( \
  * @fifo: address of the fifo to be used
  * @len: number of bytes to received
  *
- * This macro finish a DMA IN operation. The in counter will be updated by
+ * This macro finishes a DMA IN operation. The in counter will be updated by
  * the len parameter. No error checking will be done.
  *
  * Note that with only one concurrent reader and one concurrent
@@ -801,7 +801,7 @@ __kfifo_int_must_check_helper( \
  * @fifo: address of the fifo to be used
  * @len: number of bytes transferred
  *
- * This macro finish a DMA OUT operation. The out counter will be updated by
+ * This macro finishes a DMA OUT operation. The out counter will be updated by
  * the len parameter. No error checking will be done.
  *
  * Note that with only one concurrent reader and one concurrent
@@ -818,7 +818,7 @@ __kfifo_int_must_check_helper( \
  * @buf: pointer to the storage buffer
  * @n: max. number of elements to get
  *
- * This macro get the data from the fifo and return the numbers of elements
+ * This macro gets the data from the fifo and returns the numbers of elements
  * copied. The data is not removed from the fifo.
  *
  * Note that with only one concurrent reader and one concurrent