Fix type of other version fields, fix anchor.

content/client-server-api/modules/voip_events.md

@@ -39,7 +39,7 @@ or it may choose, for example, to use a different one for each call to avoid lea
 devices were used in a call (in an unencrypted room) or if a single device (ie. access token) were used to
 send signalling for more than one call party.
 
-A grammar for `party_id` is defined [below](#specify-exact-grammar-for-voip-ids).
+A grammar for `party_id` is defined [below](#grammar-for-voip-ids).
 
 #### Politeness
 In line with WebRTC perfect negotiation (https://w3c.github.io/webrtc-pc/#perfect-negotiation-example)

data/event-schemas/schema/m.call.answer.yaml

@@ -30,7 +30,7 @@
                     "required": ["type", "sdp"]
                 },
                 "version": {
-                    "type": "number",
+                    "type": "string",
                     "description": "The version of the VoIP specification this message adheres to. This specification is version 1. This field is a string such that experimental implementations can use non-integer versions. This field was an integer in the previous spec version and implementations must accept an integer 0"
                 },
                 "party_id": {

data/event-schemas/schema/m.call.candidates.yaml

@@ -40,7 +40,7 @@
                     "description": "This identifies the party that sent this event. A client may choose to re-use the device ID from end-to-end cryptography for the value of this field. "
                 },
                 "version": {
-                    "type": "integer",
+                    "type": "string",
                     "description": "The version of the VoIP specification this message adheres to. This specification is version 1. This field is a string such that experimental implementations can use non-integer versions. This field was an integer in the previous spec version and implementations must accept an integer 0."
                 }
             },

data/event-schemas/schema/m.call.hangup.yaml

@@ -30,7 +30,7 @@ properties:
         type: string
         description: The ID of the call this event relates to.
       version:
-        type: integer
+        type: string
         description: The version of the VoIP specification this message adheres to.
           This specification is version 1. This field is a string such that experimental
           implementations can use non-integer versions. This field was an integer

data/event-schemas/schema/m.call.negotiate.yaml

@@ -44,7 +44,7 @@ properties:
         type: string
         description: The ID of the call this event relates to.
       version:
-        type: integer
+        type: string
         description: The version of the VoIP specification this message adheres to.
           This specification is version 1. This field is a string such that experimental
           implementations can use non-integer versions. This field was an integer

data/event-schemas/schema/m.call.reject.yaml

@@ -22,7 +22,7 @@ properties:
         type: string
         description: The ID of the call this event relates to.
       version:
-        type: integer
+        type: string
         description: The version of the VoIP specification this message adheres to.
           This specification is version 1. This field is a string such that experimental
           implementations can use non-integer versions. This field was an integer

data/event-schemas/schema/m.call.select_answer.yaml

@@ -13,7 +13,7 @@
                     "description": "The ID of the call this event relates to."
                 },
                 "version": {
-                    "type": "integer",
+                    "type": "string",
                     "description": "The version of the VoIP specification this message adheres to. This specification is version 1. This field is a string such that experimental implementations can use non-integer versions. This field was an integer in the previous spec version and implementations must accept an integer 0."
                 },
                 "party_id": {