patch 8.2.1107: 'imactivatefunc' and 'imstatusfunc' are not used in the GUI

Problem:    'imactivatefunc' and 'imstatusfunc' are not used in the GUI.
Solution:   Adjust the #ifdefs. (closes #6367)
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 4e78a2f..bd6cc62 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -4133,7 +4133,7 @@
 			global
 	This option specifies a function that will be called to
 	activate or deactivate the Input Method.
-	It is not used in the GUI.
+	It is not used in the MS-Windows GUI version.
 	The expression will be evaluated in the |sandbox| when set from a
 	modeline, see |sandbox-option|.
 
@@ -4242,7 +4242,7 @@
 			global
 	This option specifies a function that is called to obtain the status
 	of Input Method.  It must return a positive number when IME is active.
-	It is not used in the GUI.
+	It is not used in the MS-Windows GUI version.
 
 	Example: >
 		function ImStatusFunc()