Plans for Writer Guide 25.2

I will not be producing a Writer Guide for LO v 24.8. A new guide once a year should be enough. Instead, I will apply the template provided with the SanityCheck extension (thanks to @bantoniof) and use the extension to clean up the chapters before updating the WG to LO 25.2 (and correcting any errors that have been reported in the current book) early next year.