Update README.md

Author: aduguid

README.md

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 # Microsoft SQL Server Reporting Services (SSRS)
 
-[![Join the chat at https://gitter.im/SqlServerReportingServices/Lobby](https://badges.gitter.im/SqlServerReportingServices/Lobby.svg)](https://gitter.im/SqlServerReportingServices/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Join the chat at https://gitter.im/SqlServerReportingServices](https://badges.gitter.im/SqlServerReportingServices/Lobby.svg)](https://gitter.im/SqlServerReportingServices?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE "MIT License Copyright © Anthony Duguid")
 ![current_build SSRS_2016](https://img.shields.io/badge/current_build-SSRS_2016-red.svg)