Default console formatter use same color for field and value on Err

[asger-noer]

This is not anything critical and totally a quality of life fix, but the output of the ConsoleWriter when writing following code snippet will not color the error field name with the same color as all the other field names.

log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})

if err := SomeFunc(); err != nil {
  log.Info().Err(err).Msg("log message")
}

Function in question

zerolog/console.go

Lines 399 to 403 in 07d347e

	func consoleDefaultFormatErrFieldName(noColor bool) Formatter {
	return func(i interface{}) string {
	return colorize(fmt.Sprintf("%s=", i), colorRed, noColor)
	}
	}