Fix a typo in this doc (#289)

* Fix a typo in this doc

Closes #280

* I bet the docs build is gonna complain about this one

TerminalDocs/customize-settings/appearance.md

@@ -45,7 +45,11 @@ ___
 
 :::row:::
 :::column span="":::
-When this is set to `true`, tabs are always displayed. When it's set to `false` and `showTabsInTitlebar` is set to `true`, tabs are always displayed underneath the title bar. When this is set to `false` and `showTabsInTitlebar` is set to `false`, tabs only appear after more than one tab exists by typing <kbd>ctrl+shift+t</kbd> or by typing the key binding assigned to `newTab`. Note that changing this setting will require starting a new terminal instance.
+When this is set to `true`, tabs are always displayed. When it's set to `false` and `showTabsInTitlebar` is set to `false`, tabs are always displayed underneath the title bar. When this is set to `false` and `showTabsInTitlebar` is set to `false`, tabs only appear after more than one tab exists, by typing <kbd>ctrl+shift+t</kbd> or by typing the key binding assigned to `newTab`. Note that changing this setting will require starting a new terminal instance.
+
+> [!NOTE]
+> This setting has no effect when `showTabsInTitlebar` is `true`.
+
 
 **Property name:** `alwaysShowTabs`