Documentation/SubmitChecklist: update kernel-doc task

Task 11 (kernel-doc) still mentions usage of make manpages, but
this won't work if the API is documented via Sphinx. So, update
it to use either htmldocs or pdfdocs, with are the documentation
targets that work for all.

While here, add ReST reference to the kernel documentation book.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist
index 2b7e32d..bb114c8 100644
--- a/Documentation/SubmitChecklist
+++ b/Documentation/SubmitChecklist
@@ -47,9 +47,10 @@
     but any one function that uses more than 512 bytes on the stack is a
     candidate for change.
 
-11: Include kernel-doc to document global kernel APIs.  (Not required for
-    static functions, but OK there also.) Use 'make htmldocs' or 'make
-    mandocs' to check the kernel-doc and fix any issues.
+11: Include :ref:`kernel-doc <kernel_doc>` to document global  kernel APIs.
+    (Not required for static functions, but OK there also.) Use
+    ``make htmldocs`` or ``make pdfdocs`` to check the
+    :ref:`kernel-doc <kernel_doc>` and fix any issues.
 
 12: Has been tested with CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT,
     CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES,
diff --git a/Documentation/kernel-documentation.rst b/Documentation/kernel-documentation.rst
index bc4c3f5..ceb80b8 100644
--- a/Documentation/kernel-documentation.rst
+++ b/Documentation/kernel-documentation.rst
@@ -294,6 +294,8 @@
 ``scripts/kernel-doc`` script to extract the documentation comments from the
 source.
 
+.. _kernel_doc:
+
 Writing kernel-doc comments
 ===========================