a note on which keys we ship

tsa/howto/wkd.mdwn

@@ -11,6 +11,7 @@ requests, and not any of the update mechanisms.
 The directory is populated from the tor [account-keyring][keyring].  When
 updates are pushed to the repo on alberti, a hook will rebuild the keyring,
 rebuild the wkd directory tree, and push updates to the static mirrors.
+Note that only keys with `@torproject.org` UIDs are included.
 
 To build the tree, we currently use [Debian's script][debian-keyring].