Fix broken Javadoc reference

See gh-33102

spring-context-support/src/main/java/org/springframework/ui/freemarker/FreeMarkerConfigurationFactory.java

@@ -147,7 +147,7 @@ public void setFreemarkerVariables(Map<String, Object> variables) {
 	 * <p>Note that the supplied encoding may or may not be used for template
 	 * rendering. See the documentation for Spring's {@code FreeMarkerView} and
 	 * {@code FreeMarkerViewResolver} implementations for further details.
-	 * @see #setDefaultEncoding(Charset)
+	 * @see #setDefaultCharset(Charset)
 	 * @see freemarker.template.Configuration#setDefaultEncoding
 	 * @see org.springframework.web.servlet.view.freemarker.FreeMarkerView#setEncoding
 	 * @see org.springframework.web.servlet.view.freemarker.FreeMarkerView#setContentType