Fixes comment in run_articulation.py (#876)

# Description

The comment was saying there are 3 origins, when only 2 were instantiated

## Type of change

- Bug fix (non-breaking change which fixes an issue)

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with `./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my feature works
- [x] I have updated the changelog and the corresponding version in the extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already exists there

source/standalone/tutorials/01_assets/run_articulation.py

@@ -55,7 +55,7 @@ def design_scene() -> tuple[dict, list[list[float]]]:
     cfg = sim_utils.DomeLightCfg(intensity=3000.0, color=(0.75, 0.75, 0.75))
     cfg.func("/World/Light", cfg)
 
-    # Create separate groups called "Origin1", "Origin2", "Origin3"
+    # Create separate groups called "Origin1", "Origin2"
     # Each group will have a robot in it
     origins = [[0.0, 0.0, 0.0], [-1.0, 0.0, 0.0]]
     # Origin 1