Fixes 50 series installation instruction to include torchvision (#2258)

# Description

Running on 50 series GPUs requires the latest nightly build of pytorch.
Previously, we only included instructions for installing torch, but
torchvision is also required, which sometimes caused version mismatch
errors. This change fixes the instructions to include both torch and
torchvision.

Fixes #2226 

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## Type of change

- This change requires a documentation update

## Screenshots

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## 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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Author: kellyguo11

docs/source/setup/installation/binaries_installation.rst

@@ -395,14 +395,14 @@ Installation
 
          .. code:: bash
 
-            ./isaaclab.sh -p -m pip install --upgrade --pre torch --index-url https://download.pytorch.org/whl/nightly/cu128
+            ./isaaclab.sh -p -m pip install --upgrade --pre torch torchvision --index-url https://download.pytorch.org/whl/nightly/cu128
 
       .. tab-item:: :icon:`fa-brands fa-windows` Windows
          :sync: windows
 
          .. code:: batch
 
-            isaaclab.bat -p -m pip install --upgrade --pre torch --index-url https://download.pytorch.org/whl/nightly/cu128
+            isaaclab.bat -p -m pip install --upgrade --pre torch torchvision --index-url https://download.pytorch.org/whl/nightly/cu128
 
 Verifying the Isaac Lab installation
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

docs/source/setup/installation/isaaclab_pip_installation.rst

@@ -100,7 +100,7 @@ To learn about how to set up your own project on top of Isaac Lab, see :ref:`tem
 
    .. code:: bash
 
-      pip install --upgrade --pre torch --index-url https://download.pytorch.org/whl/nightly/cu128
+      pip install --upgrade --pre torch torchvision --index-url https://download.pytorch.org/whl/nightly/cu128
 
 
 Verifying the Isaac Sim installation

docs/source/setup/installation/pip_installation.rst

@@ -306,7 +306,7 @@ Installation
 
    .. code:: bash
 
-      pip install --upgrade --pre torch --index-url https://download.pytorch.org/whl/nightly/cu128
+      pip install --upgrade --pre torch torchvision --index-url https://download.pytorch.org/whl/nightly/cu128
 
 Verifying the Isaac Lab installation
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~