feat: update single files compile error

single_files/while.zig

@@ -4,7 +4,7 @@ const print = std.debug.print;
 pub fn main() void {
   var sum: i32 = 0;
   var i: i32 = 0;
-  while (i <100) : (i += 1) {
+  while (i < 100) : (i += 1) {
     sum += i;
   }
   print("Sum: {}\n", .{sum});