manuals: improve references to classes

- Simplify references to class sections, by replacing references such as
  :ref:`image.bbclass <ref-classes-image>`
  by
  :ref:`ref-classes-image`

  That's equivalent, because the class sections always called <class>.bbclass

- Adding references to class sections, by replacing strings such as
  ``image.bbclass``
  by
  :ref:`ref-classes-image`

- Simplifying a few class section links

(From yocto-docs rev: 29d66aaa898390c19f121baf0f4fdcc178e4cd80)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 5 deletions

diff --git a/documentation/ref-manual/structure.rst b/documentation/ref-manual/structure.rst
index 5d2e3a86ef..262b041ea6 100644
--- a/documentation/ref-manual/structure.rst
+++ b/documentation/ref-manual/structure.rst
@@ -667,16 +667,17 @@ Yocto Project. Metadata has several important subdivisions:
 
 This directory contains the ``*.bbclass`` files. Class files are used to
 abstract common code so it can be reused by multiple packages. Every
-package inherits the ``base.bbclass`` file. Examples of other important
-classes are ``autotools.bbclass``, which in theory allows any
+package inherits the :ref:`ref-classes-base` file. Examples of other important
+classes are :ref:`ref-classes-autotools`, which in theory allows any
 Autotool-enabled package to work with the Yocto Project with minimal
-effort. Another example is ``kernel.bbclass`` that contains common code
+effort. Another example is :ref:`ref-classes-kernel` that contains common code
 and functions for working with the Linux kernel. Functions like image
 generation or packaging also have their specific class files such as
-``image.bbclass``, ``rootfs_*.bbclass`` and ``package*.bbclass``.
+:ref:`ref-classes-image`, :ref:`ref-classes-rootfs*` and
+:ref:`package*.bbclass <ref-classes-package>`.
 
 For reference information on classes, see the
-":ref:`ref-manual/classes:Classes`" chapter.
+":doc:`/ref-manual/classes`" chapter.
 
 .. _structure-meta-conf: