storage module is missing from documentation (after stubs conversion?)

[jepler]

I noticed that there are no search hits for VfsFat in the current doc build though it was in the 5.0.x docs. I encountered this locally because trying to link to storage.VfsFat in stubs documentation for the new _sdcardio module failed at doc build time. (#2863)

[sommersoft]

Looks like an indentation issue.

• VsFat's doc is indented beyond the start of the lines: https://github.com/adafruit/circuitpython/blob/master/shared-bindings/storage/__init__.c#L170

• extraxt_pyi explicitly looks for .startswith('//|'): https://github.com/adafruit/circuitpython/blob/master/tools/extract_pyi.py#L24