Merge pull request #2711 from jsternberg/master

Update docstring for postgres session provider

conf/defaults.ini

@@ -67,7 +67,7 @@ path = grafana.db
 
 #################################### Session ####################################
 [session]
-# Either "memory", "file", "redis", "mysql", "postgresql", default is "file"
+# Either "memory", "file", "redis", "mysql", "postgres", default is "file"
 provider = file
 
 # Provider config options

conf/sample.ini

@@ -67,7 +67,7 @@
 
 #################################### Session ####################################
 [session]
-# Either "memory", "file", "redis", "mysql", "postgresql", default is "file"
+# Either "memory", "file", "redis", "mysql", "postgres", default is "file"
 ;provider = file
 
 # Provider config options