Clarify third party software support limitations on GitHub Enterprise Server (github#26212)

Author: maclarel

data/reusables/support/enterprise-resolving-and-closing-tickets.md

@@ -1,7 +1,7 @@
 {% data variables.contact.enterprise_support %} may consider a ticket solved after providing an explanation, recommendation, usage instructions, {% ifversion ghae %}or {% endif %} workaround instructions{% ifversion ghes %}, or by advising you of an available release that addresses the issue{% endif %}.
 
 {% ifversion ghes or ghae %}
-If you use a custom or unsupported plug-in, module, or custom code, {% data variables.contact.enterprise_support %} may ask you to remove the unsupported plug-in, module, or code while attempting to resolve the issue. If the problem is fixed when the unsupported plug-in, module, or custom code is removed, {% data variables.contact.enterprise_support %} may consider the ticket solved.
+If you have installed additional third-party software on, or made modifications to, {% data variables.product.product_name %} outside of the recommendations of {% data variables.contact.enterprise_support %}, {% data variables.contact.enterprise_support %} may ask you to remove the software and/or modifications while attempting to resolve the issue. If the problem is fixed when the unsupported software or modifications have been removed, {% data variables.contact.enterprise_support %} may consider the ticket solved.
 {% endif %}
 
 {% data variables.contact.enterprise_support %} may close a ticket if the ticket is outside the scope of support or if multiple attempts to contact you have gone unanswered. If {% data variables.contact.enterprise_support %} closes a ticket due to lack of response, you can request that {% data variables.contact.enterprise_support %} reopen the ticket.