fixes (#1380)

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docs/source/refs/reference_architecture/index.rst

@@ -39,11 +39,6 @@ The reference architecture for Isaac Lab comprises the following components:
 4. :ref:`Register with Gymnasium<ra-register-gym>`
 5. :ref:`Environment Wrapping<ra-env-wrap>`
 6. :ref:`Run Training<ra-run-training>`
-
-* Single GPU Training
-* Multi-GPU and Multi-Node Training
-* Cloud-based Training
-
 7. :ref:`Run Testing<ra-run-testing>`
 
 
@@ -66,10 +61,7 @@ the following ways:
 
 1. Design your assets or robot in Isaac Sim and export the USD file.
 
-2. Design your assets or robot in any software of your choice and export it to USD using Isaac Sim converters.
-
-  Isaac Sim supports the different converters/importers to USD such as the `CAD Converter`_, `URDF Importer`_, `MJCF Importer`_, `Onshape Importer`_, etc.
-  More details are found in the `Importing Assets section`_ in the `Isaac Sim Reference Architecture`_.
+2. Design your assets or robot in any software of your choice and export it to USD using Isaac Sim converters. Isaac Sim supports the different converters/importers to USD such as the `CAD Converter`_, `URDF Importer`_, `MJCF Importer`_, `Onshape Importer`_, etc. More details are found in the `Importing Assets section`_ in the `Isaac Sim Reference Architecture`_.
 
 3. If you already have the URDF or MJCF file of your robot, you do not need to convert to USD as Isaac Lab takes URDF and MJCF XML.