Added some content missing from the manual cherrypick (#1441)

Author: pabel-rh

modules/customizing-the-appearance/proc-customize-rhdh-theme-mode.adoc

@@ -1,21 +1,20 @@
-// Module included in the following assemblies:
-// assembly-customizing-the-appearance.adoc
+:_mod-docs-content-type: PROCEDURE
 
 [id="proc-customizing-rhdh-theme-mode_{context}"]
 = Customizing the theme mode for your {product-short} instance
 
 You can choose one of the following theme modes for your {product-short} instance:
 
-* *LIGHT THEME*
-* *DARK THEME*
-* *AUTO*
+* *Light*
+* *Dark*
+* *Auto*
 
 [NOTE]
 ====
 In {product-short}, theme configurations are used to change the look and feel of different UI components. So, you might notice changes in different UI components, such as buttons, tabs, sidebars, cards, and tables along with some changes in background color and font used on the {product-very-short} pages.
 ====
 
-The default theme mode is *AUTO*, which automatically sets the light or dark theme based on your system preferences.
+The default theme mode is *Auto*, which automatically sets the light or dark theme based on your system preferences.
 
 .Prerequisites
 
@@ -24,7 +23,7 @@ The default theme mode is *AUTO*, which automatically sets the light or dark the
 .Procedure
 
 . From the {product-short} web console, click *Settings*.
-. From the *Appearance* panel, click *LIGHT THEME*, *DARK THEME*, or *AUTO* to change the theme mode.
+. From the *Appearance* panel, click *Light*, *Dark*, or *Auto* to change the theme mode.
 +
 image::user-guide/custom-theme-mode-1.png[]