slight testing.md rewording

content/patterns/coding/tested.md

@@ -26,4 +26,4 @@ The value for the `using` attribute follows a specific format: each testing setu
 * Firefox Android
 * Safari iOS
 
-Obviously, this is not a comprehensive list and more may be added over time. But it covers most of the main browsers for pairing with other software — at least in testing.
+Obviously, this is not a comprehensive list and more may be added over time. But it covers most of the main browsers for pairing with other software — at least for testing purposes.

docs/patterns/coding/tested/index.html

@@ -301,7 +301,7 @@
 <li>Safari iOS</li>
 </ul>
 
-<p>Obviously, this is not a comprehensive list and more may be added over time. But it covers most of the main browsers for pairing with other software — at least in testing.</p>
+<p>Obviously, this is not a comprehensive list and more may be added over time. But it covers most of the main browsers for pairing with other software — at least for testing purposes.</p>
 
   </main>