Updated information on custom plugins in Shuffleboard tour and FAQ (#1800)

* Removed mention of old wiki from Shuffleboard tour

* Updated Shuffleboard FAQ on custom plugins to reflect relevant information

* Replaced custom widgets documentation link with one to custom widgets index

* Replaced custom widgets FAQ link with one to custom widgets index

Author: JacksonBarker

source/docs/software/dashboards/shuffleboard/getting-started/shuffleboard-faq.rst

@@ -14,7 +14,7 @@ Bugs, issues, and feature requests can be added on the Shuffleboard GitHub page
 How can I add my own widgets or other extensions to Shuffleboard?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-The `Shuffleboard wiki <https://github.com/wpilibsuite/shuffleboard/wiki>`__ has a large amount of documentation on extending the program with custom plugins. In the future we will be posting a sample plugin project that can be used for additional custom widgets, but for now the wiki documentation is complete.
+:doc:`Custom Widgets</docs/software/dashboards/shuffleboard/custom-widgets/index>` has a large amount of documentation on extending the program with custom plugins. Sample plugin projects that can be used for additional custom widgets and themes can be found on the `Shuffleboard GitHub page <https://github.com/wpilibsuite/shuffleboard/tree/main/example-plugins>`__.
 
 How can I build Shuffleboard from the source code?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

source/docs/software/dashboards/shuffleboard/getting-started/shuffleboard-tour.rst

@@ -11,7 +11,7 @@ Shuffleboard is a dashboard for FRC\ |reg| based on newer technologies such as J
 -  Layouts are saved and the previous layout is instantiated by default when you run shuffleboard again.
 -  There is a **record and playback** feature that lets you review the data sent by your robot program after it finishes. That way you can carefully review the actions of the robot if something goes wrong.
 -  **Graph widgets are available for numeric data** and you can drag data onto a graph to see multiple points at the same time and on the same scale.
--  You can extend Shuffleboard by writing your own widgets that are specific to your team's requirements. Documentation on extending it are on the `Shuffleboard GitHub Wiki <https://github.com/wpilibsuite/shuffleboard/wiki>`__.
+-  You can extend Shuffleboard by writing your own widgets that are specific to your team's requirements. Documentation on extending it can be found in :doc:`Custom Widgets</docs/software/dashboards/shuffleboard/custom-widgets/index>`.
 
 .. figure:: images/shuffleboard-tabs.png
    :alt: