feat(spec): add array support for serviceEndpoint

Author: nikolockenvitz

docs/spec/patches.md

@@ -142,7 +142,7 @@ The `add-services` _Patch Action_ describes the addition of [Service Endpoints](
 3. Each service being added ****MUST**** be represented by an entry in the `services` array, and each entry must be an object composed as follows:
     1. The object ****MUST**** include an `id` property, and its value ****MUST**** be a string with a length of no more than fifty (50) Base64URL encoded characters. If the value is not of the correct type or exceeds the specified length, the entire _Patch Action_ ****MUST**** be discarded, without any of it being used to modify the DID's state.
     2. The object ****MUST**** include a `type` property, and its value ****MUST**** be a string with a length of no more than thirty (30) Base64URL encoded characters. If the value is not a string or exceeds the specified length, the entire _Patch Action_ ****MUST**** be discarded, without any of it being used to modify the DID's state.
-    3. The object ****MUST**** include a `serviceEndpoint` property, and its value ****MUST**** be either a valid URI string (including a scheme segment: i.e. http://, git://) or a JSON object with properties that describe the Service Endpoint further. If the values do not adhere to these constraints, the entire _Patch Action_ ****MUST**** be discarded, without any of it being used to modify the DID's state.
+    3. The object ****MUST**** include a `serviceEndpoint` property, and its value ****MUST**** be either a valid URI string (including a scheme segment: i.e. http://, git://), a JSON object with properties that describe the Service Endpoint further, or an array of such URI strings or JSON objects. If the values do not adhere to these constraints, the entire _Patch Action_ ****MUST**** be discarded, without any of it being used to modify the DID's state.
 
 
 #### `remove-services`