Update testimonials.rst

source/additional_information/testimonials.rst

@@ -30,7 +30,7 @@ Businesses of all sizes use FusionPBX daily.  We love to see folks happy saving
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-`SureVoIP <https://www.surevoip.co.uk>`_ have been using FusionPBX since 2010. SureVoIP sponsored the first versions of multi-tenant domains and hot desking. SureVoIP sponsors and contributs fixes and features when possible. 
+`SureVoIP <https://www.surevoip.co.uk>`_ have been using FusionPBX since 2010. SureVoIP sponsored the first versions of multi-tenant domains and hot desking. SureVoIP sponsors and contributes fixes and features when possible. 
 
 SureVoIP uses FusionPBX in combination with all the best of breed Open Source software projects and protocols. Namely, `PostgreSQL <https://www.postgresql.org/>`_ with BDR replication,  `memcached <https://memcached.org>`_  , `OpenSIPS <https://www.opensips.org>`_, `FreeSWITCH <https://www.freeswitch.org>`_, `NGINX <https://nginx.org>`_, `GlusterFS <https://www.gluster.org>`_, `Nagios <https://www.nagios.org>`_ , `OpenLDAP <http://www.openldap.org>`_ , `GitLab <https://www.gitlab.org>`_ , `PowerDNS <https://www.powerdns.com>`_ , `Grafana <http://grafana.org>`_ , `InfluxDB <https://www.influxdata.com>`_ , `ElasticSearch <https://www.elastic.co>`_ , `Logstash <https://www.elastic.co/products/logstash>`_ , `Ansible <https://www.ansible.com/>`_ , `MQTT <https://mosquitto.org/>`_ , `ZeroMQ <zeromq.org/>`_ , `Jenkins CI <https://jenkins.io>`_ , `GitLab <https://gitlab.com>`_ , `WebRTC <https://webrtc.org>`_ and `XMPP <https://xmpp.org>`_ . This helps the platform stay available 24/7 across two UK datacentres https://www.surevoip.co.uk/about/our-network serving more than 700 multi-tenant domains. With its `powerful API <https://www.surevoip.co.uk/api>`_ , SureVoIP integrates Cloud PBX features with many 3rd party applications.