- Fix source url

- Update to 2.0.1:
Fixed:
* Issue #598: Unicode characters no longer shifts syntax
highlighting.
* Sidebar now properly hides itself after the `Ctrl+J` Outline
command if it was
previously hidden on initial launch.
* New Norwegian translation added.
* Spanish and Italian translations updated.
- Update to 2.0.0:
Added:
* cmark-gfm now replaces Sundown as the default Markdown processor
for live previews an export.
* Syntax highlighting now utilizes cmark-gfm for better accuracy,
especially with nested blocks.
* HUDs have been replaced with a side bar.
* Theming has been revamped to include more color options, but to
exclude background images.
* CSS for HTML Preview now adaptively changes colors based on the
current theme.
* Fonts can be customized for the HTML preview in the Preview
Options dialog.
* Themes are now composed of two color schemes: a light mode and a
dark mode.
* A new dark mode button in the status bar allows users to switch
to the current theme's dark mode.
* Find and replace dialog has been revamped into a panel at the
bottom of the application.