Duplicate "showMonths" option in options table

[novellac]

Context
In the documentation for Options, the showMonths row in the options table is duplicated, with a slightly different description.

Possible Solution
To keep the row in alphabetical order, I'd suggest editing the options.md file, replacing the description from the first instance with the description with the second, and then deleting the second instance.

Acceptance Criteria

• There should be one row with showMonths
• The row should be in alphabetical order with the surrounding rows
• The row should have a complete description