Fixes duplicated text in pip installation docs (#3969)

# Description

In the [Local Installation / Installation using Isaac Lab Pip Packages
page](https://isaac-sim.github.io/IsaacLab/main/source/setup/installation/isaaclab_pip_installation.html#installing-dependencies)
of the documentation, the “Installing dependencies” section is broken. I
removed duplicate content and corrected the ordering.

Fixes #3967 

## Type of change

- Documentation update

## Screenshots

| Before | After |
| ------ | ----- |
| <img width="823" height="999" alt="スクリーンショット 2025-11-08 012827"
src="https://github.com/user-attachments/assets/6f022810-cff5-44c6-a835-75bc780433ce"
/> | <img width="822" height="651" alt="スクリーンショット 2025-11-08 014930"
src="https://github.com/user-attachments/assets/c06eacf1-bd4a-4210-8a79-c64fc923c622"
/> |

## Checklist

- [x] I have read and understood the [contribution
guidelines](https://isaac-sim.github.io/IsaacLab/main/source/refs/contributing.html)
- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [ ] 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
- [x] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

CONTRIBUTORS.md

@@ -127,6 +127,7 @@ Guidelines for modifications:
 * Ritvik Singh
 * Rosario Scalise
 * Ryley McCarroll
+* Sahara Yuta
 * Sergey Grizan
 * Shafeef Omar
 * Shane Reetz

docs/source/setup/installation/isaaclab_pip_installation.rst

@@ -25,35 +25,7 @@ Installing dependencies
    In case you used UV to create your virtual environment, please replace ``pip`` with ``uv pip``
    in the following commands.
 
--  Install a CUDA-enabled PyTorch 2.7.0 build for CUDA 12.8:
-
-   .. code-block:: none
-
-      pip install torch==2.7.0 torchvision==0.22.0 --index-url https://download.pytorch.org/whl/cu128
-
--  If you want to use ``rl_games`` for training and inferencing, install the
-   its Python 3.11 enabled fork:
-
-   .. code-block:: none
-
-      pip install git+https://github.com/isaac-sim/rl_games.git@python3.11
-
--  Install the Isaac Lab packages along with Isaac Sim:
-
-   .. code-block:: none
-
-      pip install isaaclab[isaacsim,all]==2.2.0 --extra-index-url https://pypi.nvidia.com
-
-   In case you used UV to create your virtual environment, please replace ``pip`` with ``uv pip``
-   in the following commands.
-
--  Install the Isaac Lab packages along with Isaac Sim:
-
-   .. code-block:: none
-
-      pip install isaaclab[isaacsim,all]==2.3.0 --extra-index-url https://pypi.nvidia.com
-
--  Install a CUDA-enabled PyTorch build that matches your system architecture:
+-  Install a CUDA-enabled PyTorch 2.7.0 build for CUDA 12.8 that matches your system architecture:
 
    .. tab-set::
       :sync-group: pip-platform
@@ -100,6 +72,12 @@ Installing dependencies
             This ensures the correct ``libgomp`` library is preloaded for both Isaac Sim and Isaac Lab,
             removing the preload warnings during runtime.
 
+-  Install the Isaac Lab packages along with Isaac Sim:
+
+   .. code-block:: none
+
+      pip install isaaclab[isaacsim,all]==2.3.0 --extra-index-url https://pypi.nvidia.com
+
 -  If you want to use ``rl_games`` for training and inferencing, install
    its Python 3.11 enabled fork: