fixed issue with slovak reading time of e.g. 3 minutes (#326)

Co-authored-by: a1x42 <alex@rohde.lu>

i18n/sk.toml

@@ -9,6 +9,8 @@ other = "diel"
 
 [reading_time]
 one = "Prečítate si za minútu"
+few = "Prečítate si do {{ .Count }} minút"
+many = "Prečítate si do {{ .Count }} minút"
 other = "Prečítate si do {{ .Count }} minút"
 
 [page_not_found]