Fix formatting

wiki/src/doc/about/openpgp_keys/signing_key_revocation.mdwn

@@ -8,19 +8,24 @@ Goals
 
 Covered by current proposal:
 
-  A. Prevent any single individual from revoking our signing key.
-  B. Allow a coalition of people from tails@boum.org to revoke our signing key
-     in case most of the people from tails@boum.org become unavailable.
-  C. Allow a coalition of people, not necessarily from tails@boum.org, to
-     revoke our signing key in case everybody or almost everybody from
-     tails@boum.org becomes unavailable.
-  D. Make it hard for a coalition of people not from tails@boum.org to revoke
-     our signing key unless everybody or almost everybody from tails@boum.org
-     becomes unavailable.
-  E. People not from tails@boum.org shouldn't know how the shares are spread
-     and who has them.
-  F. People in possession of a share of the revocation certificate
-     of the signing key should have instructions on how to use it if needed.
+- Prevent any single individual from revoking our signing key.
+
+- Allow a coalition of people from tails@boum.org to revoke our signing key
+  in case most of the people from tails@boum.org become unavailable.
+
+- Allow a coalition of people, not necessarily from tails@boum.org, to
+  revoke our signing key in case everybody or almost everybody from
+  tails@boum.org becomes unavailable.
+
+- Make it hard for a coalition of people not from tails@boum.org to revoke
+  our signing key unless everybody or almost everybody from tails@boum.org
+  becomes unavailable.
+
+- People not from tails@boum.org shouldn't know how the shares are spread
+  and who has them.
+
+- People in possession of a share of the revocation certificate
+  of the signing key should have instructions on how to use it if needed.
 
 Groups
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