Update PAPI availability to Team and BT only

Author: markzegarelli

src/_includes/content/papi-ga.html

@@ -2,7 +2,7 @@
   <div class="fa fa-info-circle"></div>
   <div class="content">
     <p class="header">The Segment Public API is available</p>
-    <p markdown=1>Segment's [Public API](/docs/api/public-api) is available to use. You can use the Public API and Config APIs in parallel, but moving forward any API updates will come to the Public API exclusively. </p>
+    <p markdown=1>Segment's [Public API](/docs/api/public-api) is available for Team and Business tier customers to use. You can use the Public API and Config APIs in parallel, but moving forward any API updates will come to the Public API exclusively. </p>
     <p markdown=1>Please contact your account team or [[email protected]](mailto:[email protected]) with any questions.</p>
   </div>
 </div>