Update README.md

README.md

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 Introduction
 ============
 
-ProxySQL is a high performance, high availability, protocol aware proxy for MySQL and forks (like Percona Server and MariaDB).  
+ProxySQL is a high performance, high availability, protocol aware proxy for MySQL and forks (like Percona Server and MariaDB).
 All the while getting the unlimited freedom that comes with a GPL license.
 
 Its development is driven by the lack of open source proxies that provide high performance.  
+
 Official website: http://www.proxysql.com/  
 Benchmarks and old blog posts can be found at http://www.proxysql.blogspot.com/  
 Forum: https://groups.google.com/forum/#proxysql/  
-
 Wiki: https://github.com/sysown/proxysql/wiki/  
+Linkedin group: https://www.linkedin.com/groups/13581070/