Fix pids => pid

Author: cjavad

source/includes/_printers.md

@@ -652,7 +652,7 @@ you want to change the printer that is connected to a pi.
 | `print_queue`       |
 
 ```shell
-curl https://api.simplyprint.io/{id}/printers/OneClickPrint?pIds=1234,1235 \
+curl https://api.simplyprint.io/{id}/printers/OneClickPrint?pid=1234,1235 \
   -H 'accept: application/json' \
   -H 'X-API-KEY: {API_KEY}'
 ```