Fixed dropdown not working in project adventure

docs/source/adventure/project.rst

@@ -85,8 +85,9 @@ stick with a simple text-based intro. Try to recreate the following:
             self.play(Unwrite(intro), Unwrite(vec_txts), run_time=.5)
             self.wait(0.2)
 
-.. dropdown:: Authors Solution
-
+.. admonition:: Authors solution
+    :class: dropdown
+        
     .. code-block:: python
 
         class AdventureIntro(Scene):

docs/source/conf.py

@@ -51,6 +51,7 @@ extensions = [
     "sphinx.ext.inheritance_diagram",
     "sphinxcontrib.programoutput",
     "myst_parser",
+    "sphinx_togglebutton"
 ]
 
 # Automatically generate stub pages when using the .. autosummary directive