Update error handling configuration in README example

Revised the README example to demonstrate different exception resolver options for OfficeStamperConfiguration. This includes throwing errors immediately, passing errors without stopping, and replacing erroneous placeholders with a default value.

README.adoc

@@ -306,8 +306,11 @@ Follow the given example to silence the exception and keep OfficeStamper from fa
 ----
 class Main {
     public static void main(String... args) {
-        var configuration = OfficeStamperConfiguration.standardWithPreprocessing()
-                .setFailOnUnresolvedExpression(false);
+        var configuration = OfficeStamperConfiguration
+            .standardWithPreprocessing()
+            .setExceptionResolver(ExceptionResolvers.throwing()); // to throw as soon as an error occurs (default)
+            // .setExceptionResolver(ExceptionResolvers.passing()); // to do nothing on error, leaving erroneous placeholders in place, and log the error
+            // .setExceptionResolver(ExceptionResolvers.defaulting("value")); // to replace erroneous placeholders by a default value, and log the error
         var stamper = OfficeStampers.docxStamper(configuration);
     }
 }