Minor documentation clarification in pytest module (#2968)

If a user uses the --ddtrace-patch-all option without --ddtrace, they are effectively not enabling the CI Visibility integration. This PR adds text to clarify that both options should be used.

Co-authored-by: Brett Langdon <[email protected]>

Author: edrevo

ddtrace/contrib/pytest/__init__.py

@@ -11,9 +11,11 @@
     [pytest]
     ddtrace = 1
 
-You can enable all integrations by using the ``--ddtrace-patch-all`` option or by adding this to your configuration::
+You can enable all integrations by using the ``--ddtrace-patch-all`` option
+alongside ``--ddtrace`` or by adding this to your configuration::
 
     [pytest]
+    ddtrace = 1
     ddtrace-patch-all = 1
 
 Global Configuration