Merge release-1.16 into main (#586)

Co-authored-by: Matt Wojciakowski <mattwoj@microsoft.com>
Co-authored-by: Mike Griese <migrie@microsoft.com>
Co-authored-by: Carlos Zamora <carlos.zamora@microsoft.com>
Co-authored-by: Sergey <45919738+serd2011@users.noreply.github.com>

TerminalDocs/custom-terminal-gallery/theme-gallery.md

@@ -9,7 +9,7 @@ ms.topic: sample
 
 # Theme gallery ([Preview](https://aka.ms/terminal-preview))
 
-Below are some examples of [Themes](/customize-settings/themes.md).
+Below are some examples of [Themes](./../customize-settings/themes.md).
 
 ## Seamless
 

TerminalDocs/customize-settings/themes.md

@@ -19,7 +19,7 @@ The settings listed below affect the visuals of the terminal window itself, rath
 ]
 ```
 
-For some example themes, take a look at the [Themes gallery](/custom-terminal-gallery/theme-gallery.md).
+For some example themes, take a look at the [Themes gallery](./../custom-terminal-gallery/theme-gallery.md).
 
 Each theme in the `themes` list is comprised of a collection of property objects, that specify the properties of individual elements of the application. For example, the default `"dark"` theme is the following:
 
@@ -57,7 +57,7 @@ ___
 
 ### Application theme
 
-This is the theme that will be applied to the terminal unless other colors are specified. `"system"` will use the same theme as Windows.
+This sets the UI theme of the application. This will stylize items such as buttons, the command palette, and other application UI elements. It can either be light or dark. `"system"` will use the same theme as Windows.
 
 **Property name:** `applicationTheme`