Fixed typo in upgrading.md

Line 26: 'you' to 'your' in "make a backup of you 'grafana.db'"

docs/sources/installation/upgrading.md

@@ -23,7 +23,7 @@ Before upgrading it can be a good idea to backup your Grafana database. This wil
 
 #### sqlite
 
-If you use sqlite you only need to make a backup of you `grafana.db` file. This is usually located at `/var/lib/grafana/grafana.db` on unix system.
+If you use sqlite you only need to make a backup of your `grafana.db` file. This is usually located at `/var/lib/grafana/grafana.db` on unix system.
 If you are unsure what database you use and where it is stored check you grafana configuration file. If you
 installed grafana to custom location using a binary tar/zip it is usally in `<grafana_install_dir>/data`.