update plan requirement (#13846)

Updating the plan requirement wording as current wording just causes
confusion.

Author: rodolfoBee

docs/organization/integrations/issue-tracking/jira/index.mdx

@@ -161,8 +161,7 @@ Issue tracking allows you to create Jira issues from within Sentry, and link Sen
     Enterprise plans.
   </p>
   <p>
-    Automatic issue management is available to organizations that include
-    transactions in their Business and Enterprise plans.
+    Automatic issue management is available to organizations on Business and Enterprise plans.
   </p>
 </Alert>