typo: slice type needed

viper.go

diff --git a/viper.go b/viper.go
index 639cf3b..ce86ce3 100644
--- a/viper.go
+++ b/viper.go
@@ -466,7 +466,7 @@
 }
 
 // Returns the value associated with the key as a map to a slice of strings
-func GetStringMapStringSlice(key string) map[string]string { return v.GetStringMapStringSlice(key) }
+func GetStringMapStringSlice(key string) map[string][]string { return v.GetStringMapStringSlice(key) }
 func (v *Viper) GetStringMapStringSlice(key string) map[string]string {
 	return cast.ToStringMapStringSlice(v.Get(key))
 }