ngui: make it work with zig release v0.10.0

only one tiny change: @maximum -> @max.
nothing to do for nd.

src/ngui.zig

@@ -201,7 +201,7 @@ pub fn main() anyerror!void {
             return;
         }
         // sleep at least 1ms
-        time.sleep(@maximum(1, till_next_ms) * time.ns_per_ms);
+        time.sleep(@max(1, till_next_ms) * time.ns_per_ms);
     }
 }