Update docs/source/setup/installation/isaaclab_pip_installation.rst

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Signed-off-by: myurasov-nv <168484206+myurasov-nv@users.noreply.github.com>

Author: myurasov-nv

docs/source/setup/installation/isaaclab_pip_installation.rst

@@ -57,7 +57,7 @@ Isaac Lab sub-packages:
       .. code-block:: bash
 
          # Isaac Lab only
-         uv pip install isaaclab
+         uv pip install isaaclab==4.2.0
 
          # Isaac Lab + Isaac Sim
          uv pip install "isaaclab[isaacsim]"