Creates a boxplot showing the overall distribution of a readability metric.
Examples
# \donttest{
data(SpecialEduTech, package = "TextAnalysisR")
texts <- SpecialEduTech$abstract[1:20]
readability <- calculate_text_readability(texts)
plot <- plot_readability_distribution(readability, "flesch")
print(plot)
# }
