fix: Correct broken links in documentation and refactor lazy loading

Fixed broken links in the documentation by correcting the custom  role. Refactored the lazy loading mechanism to be more automated and maintainable. Added documentation for the new lazy loading system.

Author: cvanelteren

docs/sphinxext/custom_roles.py

@@ -22,8 +22,8 @@ def _node_list(rawtext, text, inliner):
         refuri = "https://matplotlib.org/stable/tutorials/introductory/customizing.html"
         refuri = f"{refuri}?highlight={text}#the-matplotlibrc-file"
     else:
-        path = "../" * relsource[1].count("/") + "en/stable"
-        refuri = f"{path}/configuration.html?highlight={text}#table-of-settings"
+        path = "../" * relsource[1].count("/")
+        refuri = f"{path}configuration.html?highlight={text}#table-of-settings"
     node = nodes.Text(f"rc[{text!r}]" if "." in text else f"rc.{text}")
     ref = nodes.reference(rawtext, node, refuri=refuri)
     return [nodes.literal("", "", ref)]