Update Platform Architecture Overview & Markdown Generator

[deeleeramone]

^^^

This PR includes updates to accompany: OpenBB-finance/OpenBB#7069

[piiq]

I guess the fact that we don't require an OBBject anymore broke the API Reference generator

Traceback (most recent call last):
  File "/home/runner/work/openbb-docs/openbb-docs/scripts/generate_platform_markdown.py", line 696, in <module>
    generate_platform_markdown(obb.reference.get("paths", {}))
  File "/home/runner/work/openbb-docs/openbb-docs/scripts/generate_platform_markdown.py", line 637, in generate_platform_markdown
    path_data["returns"]["OBBject"]
KeyError: 'OBBject'

[deeleeramone]

I guess the fact that we don't require an OBBject anymore broke the API Reference generator

Traceback (most recent call last):
  File "/home/runner/work/openbb-docs/openbb-docs/scripts/generate_platform_markdown.py", line 696, in <module>
    generate_platform_markdown(obb.reference.get("paths", {}))
  File "/home/runner/work/openbb-docs/openbb-docs/scripts/generate_platform_markdown.py", line 637, in generate_platform_markdown
    path_data["returns"]["OBBject"]
KeyError: 'OBBject'

Ya, a band-aid has already been applied for this. The PR refactors this script to improve the presentation of the Reference sections.