docs: 'What's new' -> 'Further reading'

docs/language/learn-ql/javascript/dataflow.rst

@@ -464,8 +464,8 @@ Hint: array indices are properties with numeric names; you can use regular expre
 Exercise 4: Using the answers from 2 and 3, write a query which finds all global data flows from array elements of the result of a call to the ``tagName`` argument to the
 ``createElement`` function. (`Answer <#exercise-4>`__)
 
-What next?
-----------
+Further reading
+---------------
 
 -  Find out more about QL in the `QL language handbook <https://help.semmle.com/QL/ql-handbook/index.html>`__ and `QL language specification <https://help.semmle.com/QL/ql-spec/language.html>`__.
 -  Learn more about the query console in `Using the query console <https://lgtm.com/help/lgtm/using-query-console>`__.

docs/language/learn-ql/javascript/type-tracking.rst

@@ -518,8 +518,8 @@ Type tracking is used in a few places in the standard libraries:
 - The `Firebase <https://help.semmle.com/qldoc/javascript/semmle/javascript/frameworks/Firebase.qll/module.Firebase$Firebase.html>`__ and
   `Socket.io <https://help.semmle.com/qldoc/javascript/semmle/javascript/frameworks/SocketIO.qll/module.SocketIO$SocketIO.html>`__ models use type tracking to track objects coming from their respective APIs.
 
-What next?
-----------
+Further reading
+---------------
 
 -  Find out more about QL in the `QL language handbook <https://help.semmle.com/QL/ql-handbook/index.html>`__ and `QL language specification <https://help.semmle.com/QL/ql-spec/language.html>`__.
 -  Learn more about the query console in `Using the query console <https://lgtm.com/help/lgtm/using-query-console>`__.