upd README: 300+ SP

Più di 300 service provider in produzione grazie a spid-cie-php!

README.md

@@ -4,7 +4,7 @@
 [![Join the #spid-php channel](https://img.shields.io/badge/Slack%20channel-%23spid--php-blue.svg?logo=slack)](https://developersitalia.slack.com/messages/CB6DCK274)
 [![Get invited](https://slack.developers.italia.it/badge.svg)](https://slack.developers.italia.it/)
 [![SPID on forum.italia.it](https://img.shields.io/badge/Forum-SPID-blue.svg)](https://forum.italia.it/c/spid)
-![SP SPID in produzione con spid-php](https://img.shields.io/badge/SP%20SPID%20in%20produzione%20con%20spid--php-100+-green)
+![SP SPID in produzione con spid-php](https://img.shields.io/badge/SP%20SPID%20in%20produzione%20con%20spid--php-300+-green)
 
 # spid-cie-php
 Software Development Kit for easy SPID & CIE access integration with SimpleSAMLphp.\