another fix

build.zig

@@ -336,7 +336,11 @@ const exercises = [_]Exercise{
         .main_file = "065_builtins2.zig",
         .output = "A Narcissus loves all Narcissuses. He has room in his heart for: me myself.",
     },
-    .{ .main_file = "066_comptime.zig", .output = "Immutable: 12345, 987.654; Mutable: 54321, 456.789; Types: comptime_int, comptime_float, u32, f32", .hint = "It may help to read this one out loud to your favorite stuffed animal until it sinks in completely." },
+    .{ 
+        .main_file = "066_comptime.zig", 
+        .output = "Immutable: 12345, 987.654; Mutable: 54321, 456.789; Types: comptime_int, comptime_float, u32, f32", 
+        .hint = "It may help to read this one out loud to your favorite stuffed animal until it sinks in completely." 
+    },
     .{
         .main_file = "067_comptime2.zig",
         .output = "A BB CCC DDDD",