docs: replace the key screenshots with genuine live captures - #45

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide

[StringCaseLocaleUsage] Specify a `Locale` when calling `String#to{Lower,Upper}Case`. (Note: there are multiple suggested fixes; the third may be most appropriate if you're dealing with ASCII Strings.)

[MissingOverride] mapRow implements method in RowMapper; expected @OverRide