rename reference of `RangeError` to `RangeDefect` (#5902)
`RangeError` got deprecated in favor of `RangeDefect`. Update handbook.
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@ -30,7 +30,7 @@ It is the preferred type to represent binary blobs, i.e. we use `seq[byte]` over
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Nim allows defining ranges of valid value which will be runtime checked everytime the value changes for example
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Nim defines by default `type Natural = range[0 .. high(int)]`. If the value of a Natural becomes less than 0
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an RangeError exception will be thrown.
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a `RangeDefect` will be thrown.
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This is valuable to catch / prevent underflows.
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