feat: solve one module problem

exercises/modules/modules1.rs

@@ -3,20 +3,20 @@
 // Execute `rustlings hint modules1` or use the `hint` watch subcommand for a
 // hint.
 
-// I AM NOT DONE
 
-mod sausage_factory {
+pub mod sausage_factory {
     // Don't let anybody outside of this module see this!
     fn get_secret_recipe() -> String {
         String::from("Ginger")
     }
 
-    fn make_sausage() {
+    pub fn make_sausage() {
         get_secret_recipe();
         println!("sausage!");
     }
 }
 
 fn main() {
+
     sausage_factory::make_sausage();
 }