manuals: add references to the "do_package_qa" task

[YOCTO #14508]
Reported-by: Quentin Schulz <foss@0leil.net>
(From yocto-docs rev: af27370fd4ffd0e0455187aa9fc5349d39403ae7)

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

documentation/migration-guides/migration-1.7.rst

@@ -165,7 +165,7 @@ The following changes have occurred to the QA check process:
    more parallel execution. This change is unlikely to be an issue
    except for highly customized recipes that disable packaging tasks
    themselves by marking them as ``noexec``. For those packages, you
-   will need to disable the ``do_package_qa`` task as well.
+   will need to disable the :ref:`ref-tasks-package_qa` task as well.
 
 -  Files being overwritten during the
    :ref:`ref-tasks-populate_sysroot` task now

documentation/migration-guides/migration-3.1.rst

@@ -234,7 +234,7 @@ Packaging changes
 Additional warnings
 -------------------
 
-Warnings will now be shown at ``do_package_qa`` time in the following
+Warnings will now be shown at :ref:`ref-tasks-package_qa` time in the following
 circumstances:
 
 -  A recipe installs ``.desktop`` files containing ``MimeType`` keys but

documentation/ref-manual/variables.rst

@@ -6752,7 +6752,7 @@ system and gives an overview of their function and contents.
       the following tasks are added:
 
       - do_populate_lic
-      - do_package_qa
+      - :ref:`ref-tasks-package_qa`
       - do_populate_sysroot
       - :ref:`ref-tasks-deploy`