fix: Handle .mod files for realms in gnoweb

gno.land/pkg/gnoweb/gnoweb.go

@@ -110,7 +110,7 @@ func MakeApp(logger *slog.Logger, cfg Config) gotuna.App {
 	}
 	// realm routes
 	// NOTE: see rePathPart.
-	app.Router.Handle("/r/{rlmname:[a-z][a-z0-9_]*(?:/[a-z][a-z0-9_]*)+}/{filename:(?:.*\\.(?:gno|md|txt)$)?}", handlerRealmFile(logger, app, &cfg))
+	app.Router.Handle("/r/{rlmname:[a-z][a-z0-9_]*(?:/[a-z][a-z0-9_]*)+}/{filename:(?:.*\\.(?:gno|md|txt|mod)$)?}", handlerRealmFile(logger, app, &cfg))
 	app.Router.Handle("/r/{rlmname:[a-z][a-z0-9_]*(?:/[a-z][a-z0-9_]*)+}", handlerRealmMain(logger, app, &cfg))
 	app.Router.Handle("/r/{rlmname:[a-z][a-z0-9_]*(?:/[a-z][a-z0-9_]*)+}:{querystr:.*}", handlerRealmRender(logger, app, &cfg))
 	app.Router.Handle("/p/{filepath:.*}", handlerPackageFile(logger, app, &cfg))