[secure] Use more secure https instead of http

Author: hazendaz

src/main/java/org/apache/ibatis/datasource/unpooled/UnpooledDataSource.java

@@ -236,7 +236,7 @@ private synchronized void initializeDriver() throws SQLException {
           driverType = Resources.classForName(driver);
         }
         // DriverManager requires the driver to be loaded via the system ClassLoader.
-        // http://www.kfu.com/~nsayer/Java/dyn-jdbc.html
+        // https://www.kfu.com/~nsayer/Java/dyn-jdbc.html
         Driver driverInstance = (Driver) driverType.getDeclaredConstructor().newInstance();
         DriverManager.registerDriver(new DriverProxy(driverInstance));
         registeredDrivers.put(driver, driverInstance);

src/site/es/resources/css/site.css

@@ -16,7 +16,7 @@
 /*
  * when new flags are needed, take them from
  *
- * http://www.printableworldflags.com/flag-icon
+ * https://www.printableworldflags.com/flag-icon
  *
  * that are free for any kind of usage
  */