Fixes broken link to Allegro Hand environment in the docs (#419)

# Description

The link to Allegro Hand Environment is broken in the documentation and
is incorrect. This MR fixes the link.

Fixes #418 

## Type of change

- This change requires a documentation update

## Screenshots

No, visual change, but link now works!

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./orbit.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
- [ ] I have run all the tests with `./orbit.sh --test` and they pass
- [ ] 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

docs/source/features/environments.rst

@@ -81,7 +81,7 @@ for the reach environment:
 .. |lift-cube-ik-abs-link| replace:: `Isaac-Lift-Cube-Franka-IK-Abs-v0 <https://github.com/NVIDIA-Omniverse/orbit/blob/main/source/extensions/omni.isaac.orbit_tasks/omni/isaac/orbit_tasks/manipulation/lift/config/franka/ik_abs_env_cfg.py>`__
 .. |lift-cube-ik-rel-link| replace:: `Isaac-Lift-Cube-Franka-IK-Rel-v0 <https://github.com/NVIDIA-Omniverse/orbit/blob/main/source/extensions/omni.isaac.orbit_tasks/omni/isaac/orbit_tasks/manipulation/lift/config/franka/ik_rel_env_cfg.py>`__
 .. |cabi-franka-link| replace:: `Isaac-Open-Drawer-Franka-v0 <https://github.com/NVIDIA-Omniverse/orbit/blob/main/source/extensions/omni.isaac.orbit_tasks/omni/isaac/orbit_tasks/manipulation/cabinet/config/franka/joint_pos_env_cfg.py>`__
-.. |cube-allegro-link| replace:: `Isaac-Repose-Cube-Allegro-v0 <https://github.com/NVIDIA-Omniverse/orbit/blob/main/source/extensions/omni.isaac.orbit_tasks/omni/isaac/orbit_tasks/manipulation/inhand/config/allegro/allegro_env_cfg.py>`__
+.. |cube-allegro-link| replace:: `Isaac-Repose-Cube-Allegro-v0 <https://github.com/NVIDIA-Omniverse/orbit/blob/main/source/extensions/omni.isaac.orbit_tasks/omni/isaac/orbit_tasks/manipulation/inhand/config/allegro_hand/allegro_env_cfg.py>`__
 
 Locomotion
 ----------