minor #3794 Adds link to new QuestionHelper (weaverryan)

This PR was merged into the master branch.

Discussion
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Adds link to new QuestionHelper

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | no
| Applies to    | 2.5+

Following #3752, this adds question helper to the helper list and marks the dialog as deprecated.

Thanks!

Commits
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eef3313 [#3752] Adding the question helper to the helper list and marking dialog as deprecated

Author: weaverryan

components/console/introduction.rst

@@ -402,10 +402,11 @@ Console Helpers
 The console component also contains a set of "helpers" - different small
 tools capable of helping you with different tasks:
 
-* :doc:`/components/console/helpers/dialoghelper`: interactively ask the user for information
+* :doc:`/components/console/helpers/questionhelper`: interactively ask the user for information
 * :doc:`/components/console/helpers/formatterhelper`: customize the output colorization
 * :doc:`/components/console/helpers/progresshelper`: shows a progress bar
 * :doc:`/components/console/helpers/tablehelper`: displays tabular data as a table
+* :doc:`/components/console/helpers/dialoghelper`: (deprecated) interactively ask the user for information
 
 Testing Commands
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