fix: replace removed embedWindow with correct vedo backend instructions (#437)

Co-authored-by: Igor Tatarnikov <61896994+IgorTatarnikov@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

brainrender/_jupyter.py

@@ -43,9 +43,13 @@ def __call__(self, obj, *args, **kwargs):  # pragma: no cover
             return self.func(obj, *args, **kwargs)
         else:
             print(
-                f"[{orange_dark}]Cannot run function [bold {salmon}]{self.func.__name__}[/ bold {salmon}] in a jupyter notebook",
-                f"[{orange_dark}]Try setting the correct backend before creating your scene:\n",
-                Syntax("from vedo import embedWindow", lexer="python"),
-                Syntax("embedWindow(None)", lexer="python"),
+                f"[{orange_dark}]Cannot run function [bold {salmon}]{self.func.__name__}[/bold {salmon}] in a jupyter notebook.",
+                f"[{orange_dark}]To use brainrender in a Jupyter notebook, set the vedo backend to 'k3d' before creating your scene:\n",
+                Syntax("import vedo", lexer="python"),
+                Syntax(
+                    "vedo.settings.default_backend = 'k3d'", lexer="python"
+                ),
+                f"\n[{orange_dark}]Note: some features are not available in the k3d backend.",
+                f"[{orange_dark}]To use all features, run brainrender in a standard Python script or interactive terminal instead.",
             )
             return None