refactoring: Change the var name

src/convert_time.c

@@ -1,6 +1,6 @@
 #include "convert_time.h"
 
-double converter_min_to_sec(double min){
-    double time = min / 60;
+double converter_sec_to_min(double sec){
+    double time = sec / 60;
     return time;
-}
+}