Merge pull request #73 from marclaporte/patch-2

typo

README.md

 
 Installing Jitsi Meet is quite a simple experience even though it requires installing a few other components first, such as Jitsi Videobridge, a web server such as Nginx and an XMPP one like Prosody.
 
-You can find information on how to deploy Jitsi Meet in the [installation insstructions](https://jitsi.org/meet/deploy)
+You can find information on how to deploy Jitsi Meet in the [installation instructions](https://jitsi.org/meet/deploy)
 
 You may also find it helpful to have a look at our sample [config files](https://github.com/jitsi/jitsi-meet/tree/master/doc/example-config-files/)