Update description

Author: AdvanceControl

doc/classes/EditorSettings.xml

@@ -1594,8 +1594,9 @@
 			The GDScript syntax highlighter text color for annotations (e.g. [code]@export[/code]).
 		</member>
 		<member name="text_editor/theme/highlighting/gdscript/bracket_pair_colors" type="PackedColorArray" setter="" getter="">
-			The list of colors to cycle through for colorizing bracket pairs.
-			Leave blank to disable.
+			The list of colors to use for bracket pair colorization.
+			The color for a bracket pair is determined by its nesting level. The first color in the array is used for the outermost level, the second for the first nested level, and so on. If the nesting level exceeds the number of colors in the array, the colors will cycle through from the beginning.
+			An empty array disables this feature.			
 		</member>
 		<member name="text_editor/theme/highlighting/gdscript/function_definition_color" type="Color" setter="" getter="">
 			The GDScript syntax highlighter text color for function definitions (e.g. the [code]_ready[/code] in [code]func _ready():[/code]).