howto/upgrades.md

@@ -7,7 +7,8 @@
 Major upgrades are done by hand, with a "cheat sheet" created for each
 major release. Here are the currently documented ones:
 
- * [buster](howto/upgrades/buster)
+ * Debian 11, [bullseye](howto/upgrades/bullseye)
+ * Debian 10, [buster](howto/upgrades/buster)
 
 ### Team-specific upgrade policies