Update docs links

docs/source/Howtos/Beginner-Tutorial/Part4/Beginner-Tutorial-Part4-Intro.md

@@ -1,20 +1,18 @@
 # Part 4: Using what we created
 
-```{eval-rst}
-..sidebar:: Beginner Tutorial Parts
-
-  `Introduction <../Beginner-Tutorial-Intro.html>`_
-    Getting set up.
-  Part 1: `What we have <../Part1/Beginner-Tutorial-Part1-Intro.html>`_
-    A tour of Evennia and how to use the tools, including an introduction to Python.
-  Part 2: `What we want <../Part2/Beginner-Tutorial-Part2-Intro.html>`_
-    Planning our tutorial game and what to think about when planning your own in the future.
-  Part 3: `How we get there <../Part3/Beginner-Tutorial-Part3-Intro.html>`_
-       Getting down to the meat of extending Evennia to make our game to make a tech-demo
-  **Part 4: Using what we created**
-    Using the tech-demo and world content to go with our code
-  Part 5: `Showing the world <../Part5/Beginner-Tutorial-Part5-Intro.html>`_
-    Taking our new game online and let players try it out
+```{sidebar} Beginner Tutorial Parts
+- [Introduction](../Beginner-Tutorial-Intro.md)
+<br>Getting set up.
+- Part 1: [What we have](../Part1/Beginner-Tutorial-Part1-Intro.md)
+<br>A tour of Evennia and how to use the tools, including an introduction to Python.
+- Part 2: [What we want](../Part2/Beginner-Tutorial-Part2-Intro.md)
+<br>Planning our tutorial game and what to think about when planning your own in the future.
+- Part 3: [How we get there](../Part3/Beginner-Tutorial-Part3-Intro.md)
+<br>Getting down to the meat of extending Evennia to make our game
+- **Part 4: [Using what we created](./Beginner-Tutorial-Part4-Intro.md)**
+<br>Building a tech-demo and world content to go with our code
+- Part 5: [Showing the world](../Part5/Beginner-Tutorial-Part5-Intro.md)
+<br>Taking our new game online and let players try it out
 ```
 
 We now have the code underpinnings of everything we need. We have also tested the various components