The following is a link to a game design document created in Google Docs. I use Markdown with Mou for a majority of my word processing needs, so here it is. Each section in the index is an anchor that links to the corresponding item. The "Schedule" section includes a table for weekly planning.
If you're familiar with git, paste the following in the command line, making changes where necessary:
git clone https://github.com/CiaraBurkett/game-design-document.md.git [optional: your document name]- git remote remove origin
Otherwise, download the zip file.