a source is not a bullet

This was rendering as a list item, which seems weird. This now renders as a double-dash, which is not great, but slightly better.

a source is not a bullet
0685a078 · anarcat · 19baa053 · 0685a078
Verified Commit 0685a078 authored 3 years ago by anarcat
--- a/service/documentation.md
+++ b/service/documentation.md
@@ -6,7 +6,7 @@ for the status page at <https://status.torproject.org>.

 > The palest ink is better than the most capricious memory.
 >
-> - ancient Chinese proverb
+> -- ancient Chinese proverb

 [[_TOC_]]