chore(docs): Updated API Reference (v2) (#9666)

Automated changes by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>
Co-authored-by: Shahed Nasser <27354907+shahednasser@users.noreply.github.com>

www/apps/api-reference/specs/admin/paths/admin_exchanges.yaml

@@ -6,16 +6,6 @@ get:
     as `id`. The exchanges can also be sorted or paginated.
   x-authenticated: true
   parameters:
-    - name: expand
-      in: query
-      description: Comma-separated relations that should be expanded in the returned data.
-      required: false
-      schema:
-        type: string
-        title: expand
-        description: >-
-          Comma-separated relations that should be expanded in the returned
-          data.
     - name: fields
       in: query
       description: >-
@@ -1021,16 +1011,6 @@ post:
     the exchange is confirmed.
   x-authenticated: true
   parameters:
-    - name: expand
-      in: query
-      description: Comma-separated relations that should be expanded in the returned data.
-      required: false
-      schema:
-        type: string
-        title: expand
-        description: >-
-          Comma-separated relations that should be expanded in the returned
-          data.
     - name: fields
       in: query
       description: >-