Documentation: update watch_queue.rst references

Changeset f5461124d5 ("Documentation: move watch_queue to core-api")
renamed: Documentation/watch_queue.rst
to: Documentation/core-api/watch_queue.rst.

Update the cross-references accordingly.

Fixes: f5461124d5 ("Documentation: move watch_queue to core-api")
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/1c220de9c58f35e815a3df9458ac2bea323c8bfb.1656234456.git.mchehab@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/security/keys/core.rst

@@ -1046,7 +1046,7 @@ The keyctl syscall functions are:
      "filter" is either NULL to remove a watch or a filter specification to
      indicate what events are required from the key.
 
-     See Documentation/watch_queue.rst for more information.
+     See Documentation/core-api/watch_queue.rst for more information.
 
      Note that only one watch may be emplaced for any particular { key,
      queue_fd } combination.

include/linux/watch_queue.h

@@ -4,7 +4,7 @@
  * Copyright (C) 2020 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
  *
- * See Documentation/watch_queue.rst
+ * See Documentation/core-api/watch_queue.rst
  */
 
 #ifndef _LINUX_WATCH_QUEUE_H

init/Kconfig

@@ -414,7 +414,7 @@ config WATCH_QUEUE
 	  with watches for key/keyring change notifications and device
 	  notifications.
 
-	  See Documentation/watch_queue.rst
+	  See Documentation/core-api/watch_queue.rst
 
 config CROSS_MEMORY_ATTACH
 	bool "Enable process_vm_readv/writev syscalls"

kernel/watch_queue.c

@@ -4,7 +4,7 @@
  * Copyright (C) 2020 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
  *
- * See Documentation/watch_queue.rst
+ * See Documentation/core-api/watch_queue.rst
  */
 
 #define pr_fmt(fmt) "watchq: " fmt