Transfers RL-games fork to Isaac Sim org (#578)

# Description

Uses rl-games fork from isaac sim org for installation


## Type of change

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applicable. -->

- 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
- [ ] 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

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source/isaaclab_rl/setup.py

@@ -42,7 +42,7 @@ EXTRAS_REQUIRE = {
     "sb3": ["stable-baselines3>=2.6", "tqdm", "rich"],  # tqdm/rich for progress bar
     "skrl": ["skrl>=1.4.2"],
     "rl-games": [
-        "rl-games @ git+https://github.com/kellyguo11/rl_games.git@python3.11",
+        "rl-games @ git+https://github.com/isaac-sim/rl_games.git@python3.11",
         "gym",
     ],  # rl-games still needs gym :(
     "rsl-rl": ["rsl-rl-lib==2.3.3"],