Guide: Adapt range values to variable name
auto merge of #18230 : cakebaker/rust/adapt_range_value_to_variable_name, r=steveklabnik

 The variable name <code>one_to_one_hundred</code> implies that it will contain a collection with the values from 1 to 100, but the collection contains the values from 0 to 99. This patch changes the ranges to produce a collection with the values from 1 to 100.