Refs #32412 -- Adjusted beginning of Advice for new contributors.
Refs #32412 -- Adjusted beginning of Advice for new contributors.

With the goal of guiding folks to the right destination:

* Improved wording of tutorial call-out.
* Added summary of page purpose.
* Added link to Writing code reference doc.

shaib/django,dsanders11/django,auvipy/django,atul-bhouraskar/django,rsalmaso/django,solarissmoke/django,takis/django,pauloxnet/django,ghickman/django,freakboy3742/django,atul-bhouraskar/django,ghickman/django,dsanders11/django,blighj/django,solarissmoke/django,pauloxnet/django,blighj/django,solarissmoke/django,apollo13/django,felixxm/django,freakboy3742/django,manhhomienbienthuy/django,freakboy3742/django,MarkusH/django,elena/django,monetate/django,monetate/django,solarissmoke/django,blighj/django,atul-bhouraskar/django,ghickman/django,rsalmaso/django,takis/django,felixxm/django,django/django,auvipy/django,pauloxnet/django,auvipy/django,auvipy/django,rsalmaso/django,felixxm/django,adamchainz/django,dsanders11/django,rsalmaso/django,apollo13/django,ghickman/django,adamchainz/django,atul-bhouraskar/django,monetate/django,apollo13/django,MarkusH/django,blighj/django,shaib/django,django/django,adamchainz/django,takis/django,dsanders11/django,shaib/django,MarkusH/django,manhhomienbienthuy/django,takis/django,monetate/django,shaib/django,pauloxnet/django,elena/django,manhhomienbienthuy/django,MarkusH/django,manhhomienbienthuy/django,adamchainz/django,django/django,apollo13/django,elena/django,felixxm/django,elena/django,django/django