Update edit-profile.md with custom fields note

Added note about custom member fields visibility for non-Super Admins.

Author: robinsowell

docs/member/edit-profile.md

@@ -15,7 +15,7 @@
 
     exp:member:edit_profile
 
-This template tag allows editing a member's profile using the form that is similar to [Channel Form](channels/channel-form/overview.md). Please note however that not all Channel Form parameters and template tags are available in the Member Profile form, so make sure to consult the documentation below. The form can only be used to update profile of the member that is currently logged in.
+This template tag allows editing a member's profile using the form that is similar to [Channel Form](channels/channel-form/overview.md). Please note however that not all Channel Form parameters and template tags are available in the Member Profile form, so make sure to consult the documentation below. The form can only be used to update profile of the member that is currently logged in. Only custom member fields set to show publically can be edited by non-Super Admin.
 
 {{embed:_tips/form-validation.md}}