Improve descriptions for ProjectSettings' `disable_stdout`/`disable_stderr`

(cherry picked from commit e3ef50db3805b17962f7ecbfe262bdd7f1ab233a)

doc/classes/ProjectSettings.xml

@@ -245,10 +245,12 @@
 			Icon set in [code].ico[/code] format used on Windows to set the game's icon. This is done automatically on start by calling [method OS.set_native_icon].
 		</member>
 		<member name="application/run/disable_stderr" type="bool" setter="" getter="" default="false">
-			If [code]true[/code], disables printing to standard error in an exported build.
+			If [code]true[/code], disables printing to standard error. If [code]true[/code], this also hides error and warning messages printed by [method @GDScript.push_error] and [method @GDScript.push_warning]. See also [member application/run/disable_stdout].
+			Changes to this setting will only be applied upon restarting the application.
 		</member>
 		<member name="application/run/disable_stdout" type="bool" setter="" getter="" default="false">
-			If [code]true[/code], disables printing to standard output in an exported build.
+			If [code]true[/code], disables printing to standard output. This is equivalent to starting the editor or project with the [code]--quiet[/code] command line argument. See also [member application/run/disable_stderr].
+			Changes to this setting will only be applied upon restarting the application.
 		</member>
 		<member name="application/run/flush_stdout_on_print" type="bool" setter="" getter="" default="false">
 			If [code]true[/code], flushes the standard output stream every time a line is printed. This affects both terminal logging and file logging.