Added alt text for settings-menu.rst (#14639)

* Re-do for PR #14595 to fix CI issues.

* Added alt text to settings-menu.rst

* Update docs/docsite/rst/common/settings-menu.rst

Co-authored-by: Don Naro <dnaro@redhat.com>

---------

Co-authored-by: Hao Liu <44379968+TheRealHaoLiu@users.noreply.github.com>
Co-authored-by: Don Naro <dnaro@redhat.com>

docs/docsite/rst/common/settings-menu.rst

@@ -8,5 +8,6 @@
 To enter the Settings window for AWX, click **Settings** from the left navigation bar. This page allows you to modify your AWX configuration, such as settings associated with authentication, jobs, system, and user interface.
 
 .. image:: ../common/images/ug-settings-menu-screen.png
+	:alt: The main settings window for AWX.
 
 For more information on configuring these settings, refer to :ref:`ag_configure_awx` section of the |ata|.