make examples agree with schema

data/event-schemas/examples/m.secret.request.yaml

@@ -1,6 +1,9 @@
 {
-  "name": "org.example.some.secret",
+  "type": "m.secret.request",
-  "action": "request",
+  "content": {
-  "requesting_device_id": "ABCDEFG",
+    "name": "org.example.some.secret",
-  "request_id": "randomly_generated_id_9573"
+    "action": "request",
+    "requesting_device_id": "ABCDEFG",
+    "request_id": "randomly_generated_id_9573"
+  }
 }

data/event-schemas/examples/m.secret.send.yaml

@@ -1,4 +1,7 @@
 {
-  "request_id": "randomly_generated_id_9573",
+  "type": "m.secret.send",
-  "secret": "ThisIsASecretDon'tTellAnyone"
+  "content": {
+    "request_id": "randomly_generated_id_9573",
+    "secret": "ThisIsASecretDon'tTellAnyone"
+  }
 }