drbd: actlog: fix kernel-doc warnings and spelling

Fix all kernel-doc warnings in drbd_actlog.c:

drbd_actlog.c:963: warning: No description found for return value of 'drbd_rs_begin_io'
drbd_actlog.c:1015: warning: Function parameter or member 'peer_device' not described in 'drbd_try_rs_begin_io'
drbd_actlog.c:1015: warning: Excess function parameter 'device' description in 'drbd_try_rs_begin_io'
drbd_actlog.c:1015: warning: No description found for return value of 'drbd_try_rs_begin_io'
drbd_actlog.c:1197: warning: No description found for return value of 'drbd_rs_del_all'

Fix one spelling error (s/ore/or/).

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Philipp Reisner <[e-mail]>
Cc: Lars Ellenberg <[e-mail]>
Cc: Christoph Böhmwalder <[e-mail]>
Cc: <[e-mail]>
Cc: Jens Axboe <[e-mail]>
Cc: <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jens Axboe <[e-mail]>

drivers/block/drbd/drbd_actlog.c

···
 }
 
 /* clear the bit corresponding to the piece of storage in question:
- * size byte of data starting from sector.  Only clear a bits of the affected
- * one ore more _aligned_ BM_BLOCK_SIZE blocks.
+ * size byte of data starting from sector.  Only clear bits of the affected
+ * one or more _aligned_ BM_BLOCK_SIZE blocks.
  *
  * called by worker on C_SYNC_TARGET and receiver on SyncSource.
  *
···
  * @device:	DRBD device.
  * @sector:	The sector number.
  *
- * This functions sleeps on al_wait. Returns 0 on success, -EINTR if interrupted.
+ * This functions sleeps on al_wait.
+ *
+ * Returns: %0 on success, -EINTR if interrupted.
  */
 int drbd_rs_begin_io(struct drbd_device *device, sector_t sector)
 {
···
 
 /**
  * drbd_try_rs_begin_io() - Gets an extent in the resync LRU cache, does not sleep
- * @device:	DRBD device.
+ * @peer_device: DRBD device.
  * @sector:	The sector number.
  *
  * Gets an extent in the resync LRU cache, sets it to BME_NO_WRITES, then
- * tries to set it to BME_LOCKED. Returns 0 upon success, and -EAGAIN
+ * tries to set it to BME_LOCKED.
+ *
+ * Returns: %0 upon success, and -EAGAIN
  * if there is still application IO going on in this area.
  */
 int drbd_try_rs_begin_io(struct drbd_peer_device *peer_device, sector_t sector)
···
  * drbd_rs_del_all() - Gracefully remove all extents from the resync LRU
  * @device:	DRBD device.
  *
- * Returns 0 upon success, -EAGAIN if at least one reference count was
+ * Returns: %0 upon success, -EAGAIN if at least one reference count was
  * not zero.
  */
 int drbd_rs_del_all(struct drbd_device *device)