Update TupleConstruction.cs

"No names in declaration, so names in construction are irrelevant" means you need to declare it without names.

Author: wilka

CSharp7/CSharp7/TupleConstruction.cs

@@ -24,7 +24,7 @@ static void Main()
             (long a, int b) tuple4 = (1, 2);
 
             // No names in declaration, so names in construction are irrelevant
-            var tuple5 = (a: 1, b: 2);
+            (int, int) tuple5 = (a: 1, b: 2);
         }
     }
 }