Last cosmetic changes

switched back to the use of `.. NOTE::`

specification/rooms/v1.rst

@@ -109,7 +109,11 @@ The types of state events that affect authorization are:
 - ``m.room.power_levels``
 - ``m.room.third_party_invite``
 
-**Note:** Power levels are inferred from defaults when not explicitly supplied. For example, mentions of the ``sender``'s power level can also refer to the default power level for users in the room.
+.. NOTE::
+
+  Power levels are inferred from defaults when not explicitly supplied.
+  For example, mentions of the ``sender``'s power level can also refer 
+  to the default power level for users in the room.
 
 The rules are as follows:
 
@@ -284,11 +288,11 @@ The rules are as follows:
 
 #. Otherwise, allow.
 
+.. NOTE::
 
+  Some consequences of these rules:
 
-  **Note:** Some consequences of these rules:
-
-  * Unless you are a member of the room, the only permitted operations (apart
+  *  Unless you are a member of the room, the only permitted operations (apart
     from the initial create/join) are: joining a public room; accepting or
     rejecting an invitation to a room.