website: Correct fmt -check (#21631)
* Correct fmt -check With `-check=false` the exit status is always zero. With `-check=true` the exit status is zero when all files are properly formatted and non-zero otherwise. * update fmt documentation to use short form for -diff and -check
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@ -33,9 +33,8 @@ input (STDIN).
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The command-line flags are all optional. The list of available flags are:
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* `-list=true` - List files whose formatting differs (disabled if using STDIN)
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* `-write=true` - Write result to source file instead of STDOUT (disabled if
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using STDIN or -check)
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* `-diff=false` - Display diffs of formatting changes
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* `-check=false` - Check if the input is formatted. Exit status will be 0 if
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* `-list=false` - Don't list the files containing formatting inconsistencies.
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* `-write=false` - Don't overwrite the input files. (This is implied by `-check` or when the input is STDIN.)
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* `-diff` - Display diffs of formatting changes
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* `-check` - Check if the input is formatted. Exit status will be 0 if
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all input is properly formatted and non-zero otherwise.
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