chroma_radius, cr & chroma_strength, cs setting range is wrong.

[nicol]

Summary of the bug: chroma_radius, cr & chroma_strength, cs setting range is wrong, ffmpeg -h filter=sab and documentation.
How to reproduce:

% ffmpeg -h filter=sab
ffmpeg version N-81234-ge1be80a
built on ... Zeranoe

ffmpeg -h filter=sab
chroma_radius <float> ..FV.... set chroma radius (from -0.9 to 4) (default -0.9)
cr <float> ..FV.... set chroma radius (from -0.9 to 4) (default -0.9)

https://ffmpeg.org/ffmpeg-filters.html#sab
chroma_radius, cr
Set chroma blur filter strength, must be a value in range 0.1-4.0. A greater value will result in a more blurred image, and in slower processing.

ffmpeg -h filter=sab
chroma_strength <float> ..FV.... set chroma strength (from -0.9 to 100) (default -0.9)
cs <float> ..FV.... set chroma strength (from -0.9 to 100) (default -0.9)

https://ffmpeg.org/ffmpeg-filters.html#sab
chroma_strength, cs
Set chroma maximum difference between pixels to still be considered, must be a value in the 0.1-100.0 range.

[Carl Eugen Hoyos]

Fixed in 8916ad956a1e9093a935be133b38d0e367c0aee5