Fixing a typo in 07_day_functions.md

In Unlimited number of parameters in arrow function, there is an unexpected token ')'. It's been removed.

07_Day_Functions/07_day_functions.md

@@ -273,7 +273,7 @@ const sumAllNums = (...args) => {
   console.log(args)
 }
 
-sumAllNums(1, 2, 3, 4))
+sumAllNums(1, 2, 3, 4)
 // [1, 2, 3, 4]
 
 ```
@@ -705,4 +705,4 @@ It Will be covered in other section.
 
 🎉 CONGRATULATIONS ! 🎉
 
-[<< Day 6](../06_Day_Loops/06_day_loops.md) | [Day 8 >>](../08_Day_Objects/08_day_objects.md)
+[<< Day 6](../06_Day_Loops/06_day_loops.md) | [Day 8 >>](../08_Day_Objects/08_day_objects.md)