Tidy testing/index.md

Author: stevepiercy

plone.app.dexterity/testing/index.md

@@ -1,20 +1,20 @@
 ---
 myst:
   html_meta:
-    "description": ""
-    "property=og:description": ""
-    "property=og:title": ""
-    "keywords": ""
+    "description": "How to write unit and integration tests for Plone content types"
+    "property=og:description": "How to write unit and integration tests for Plone content types"
+    "property=og:title": "How to write unit and integration tests for Plone content types"
+    "keywords": "Plone"
 ---
 
 # Testing Dexterity types
 
-**Writing unit and integration tests**
+This part describes how to write unit and integration tests for Plone content types.
 
 ```{toctree}
 :maxdepth: 2
 
-unit-tests.rst
-integration-tests.rst
-mock-testing.rst
+unit-tests
+integration-tests
+mock-testing
 ```