Document missing plan requirements

Author: johanohly

source/includes/_queue.md

@@ -728,7 +728,7 @@ curl https://api.simplyprint.io/{id}/queue/ReviveItem?job=1234 \
 ## Get groups
 
 <aside class="notice">
-  Print Queue Groups require the <b>Pro</b> plan.
+  This endpoint requires the <b>Pro</b> plan.
 </aside>
 
 ```shell
@@ -776,6 +776,10 @@ curl https://api.simplyprint.io/{id}/queue/groups/Get \
 
 ## Save group
 
+<aside class="notice">
+  This endpoint requires the <b>Pro</b> plan.
+</aside>
+
 ```shell
 curl https://api.simplyprint.io/{id}/queue/groups/Save \
   -X POST \
@@ -824,6 +828,10 @@ curl https://api.simplyprint.io/{id}/queue/groups/Save \
 
 ## Delete group
 
+<aside class="notice">
+  This endpoint requires the <b>Pro</b> plan.
+</aside>
+
 ```shell
 curl https://api.simplyprint.io/{id}/queue/groups/Delete?id=123 \
   -X POST \
@@ -863,6 +871,10 @@ curl https://api.simplyprint.io/{id}/queue/groups/Delete?id=123 \
 
 ## Set group order
 
+<aside class="notice">
+  This endpoint requires the <b>Pro</b> plan.
+</aside>
+
 ```shell
 curl https://api.simplyprint.io/{id}/queue/groups/SetOrder?queue_group=123 \
   -X POST \