unclear whether to combine arguments that themselves have arguments in the argument to specify list of command line arguments

the most it is explained in the doc is "A list of separate command line arguments to the program"

i was using:
`readProcessWithExitCode "ffmpeg" ["-i", d, "-c copy", f] ""`
and getting an error:
```
Unrecognized option 'c copy'.
Error splitting the argument list: Option not found
```
very confusing because executing the command in a terminal manually gave no error.

i only luckily happened to try the solution that works:
`readProcessWithExitCode "ffmpeg" ["-i", d, "-c", "copy", f] ""`

this is ffmpeg 4.4.1 on osx 11.6.6 and stack
`Version 2.7.3, Git revision 7927a3aec32e2b2e5e4fb5be76d0d50eddcc197f x86_64 hpack-0.34.4`

Start at the documentation for readProcessWithExitCode and compare its wording with the two argument-list examples in this report. Update the explanation so that each list element is an individual command-line argument, then verify the documented example matches the working ffmpeg invocation.

Written by the indexing model from the issue text.