Add update permalinks warning to SingleInstanceExampleTest

Author: iDneprov

Diff for: src/test/java/io/tarantool/driver/integration/SingleInstanceExampleTest.java

@@ -27,6 +27,8 @@
 
 /**
  * @author Ivan Dneprov
+ *
+ * WARNING: If you updated the code in this file, don't forget to update the readme permalinks!
  */
 @Testcontainers
 public class SingleInstanceExampleTest {