docs: add searchKeywords in testing guide (#47953)

alan-agius4 · AndrewKushnir · commit 5b00e1ffa23d · 2022-11-03T17:51:57.000-07:00
This is to push up the page in search results when searching for these terms. Ex: currently when searching using the term `test` this page is displayed at the middle of the results. PR Close #47953
diff --git a/aio/content/guide/testing.md b/aio/content/guide/testing.md
@@ -1,5 +1,7 @@
 <a id="top"></a>
 
+{@searchKeywords test testing karma jasmine coverage}
+
 # Testing
 
 Testing your Angular application helps you check that your application is working as you expect.
