doc, fmt: use map{key: value} syntax for map literals (#8623)

vlib/vweb/tests/vweb_test.v

@@ -208,7 +208,7 @@ fn testsuite_end() {
 	// It sends a request to the server to shutdown.
 	x := http.fetch('http://127.0.0.1:$sport/shutdown', 
 		method: .get
-		cookies: {
+		cookies: map{
 			'skey': 'superman'
 		}
 	) or {

vlib/vweb/vweb.v

@@ -19,7 +19,7 @@ pub const (
 	headers_close           = '$header_server$header_connection_close\r\n'
 	http_404                = 'HTTP/1.1 404 Not Found\r\nContent-Type: text/plain\r\nContent-Length: 13\r\n${headers_close}404 Not Found'
 	http_500                = 'HTTP/1.1 500 Internal Server Error\r\nContent-Type: text/plain\r\n${headers_close}500 Internal Server Error'
-	mime_types              = {
+	mime_types              = map{
 		'.css':  'text/css; charset=utf-8'
 		'.gif':  'image/gif'
 		'.htm':  'text/html; charset=utf-8'