Merge 2e0dcad0b4 into 8a2c58b1b1

changelogs/server_server/newsfragments/2128.clarification

@@ -1 +0,0 @@
-Fix various typos throughout the specification.

content/server-server-api.md

@@ -1337,7 +1337,7 @@ calculated as follows.
 The *content hash* of an event covers the complete event including the
 *unredacted* contents. It is calculated as follows.
 
-First, any existing `unsigned`, `signatures`, and `hashes` properties are
+First, any existing `unsigned`, `signature`, and `hashes` members are
 removed. The resulting object is then encoded as [Canonical
 JSON](/appendices#canonical-json), and the JSON is hashed using
 SHA-256.