fix missing indent

Author: alisonmaher

css-color-adjust-1/Overview.bs

@@ -1111,7 +1111,7 @@ Emulation {#color-adjust-emulation}
 	</xmp>
 
 	To <dfn export>set emulated forced colors theme data</dfn>, given
-    [=navigable=] |navigable| and an |emulatedThemeData|:
+	[=navigable=] |navigable| and an |emulatedThemeData|:
 
 	1. Assert |emulatedThemeData| is {{ForcedColorsModeAutomationTheme}}.