Apply zig fmt to exercises

exercises/34_quiz4.zig

@@ -7,7 +7,7 @@
 //
 const std = @import("std");
 
-const NumError = error{ IllegalNumber };
+const NumError = error{IllegalNumber};
 
 pub fn main() void {
     const stdout = std.io.getStdOut().writer();
@@ -19,6 +19,6 @@ pub fn main() void {
 
 // Just don't modify this function. It's "perfect" the way it is. :-)
 fn getNumber() NumError!u32 {
-    if( false ) return NumError.IllegalNumber;
+    if (false) return NumError.IllegalNumber;
     return 42;
 }