Documentation for floptool contains copypaste of castool instructions that do not apply

[hippietrail]

The documentation for floptool in docs/source/tools/floptool.rst obviously started as a copy paste of the castool doc but was not correctly updated and contains references to CAS files and converting to WAV which make no sense for floppy disks:

Floptool is a tool for the maintenance and manipulation of floppy images that MAME users need to deal with. MAME directly supports .WAV audio formatted images, but many of the existing images out there may come in forms such as .TAP for Commodore 64 tapes, .CAS for Tandy Color Computer tapes, and so forth. Castool will convert these other formats to .WAV for use in MAME.

Example usage:
floptool convert coco zaxxon .cas zaxxon .wav

floptool convert cbm arkanoid .tap arkanoid .wav

floptool convert ddp mybasicprogram.ddp mybasicprogram .wav

[Firehawke]

I'll have a look at it after I finish up with chdman.