Fix links in Javadoc and reference docs

- Fix broken links (by using a new URL, an alternative URL, or a
  Wayback Machine link)

- Use HTTPS where possible

- Remove https://issuetracker.springsource.com/browse/EBR-349: this
  link is dead and is also mentioned in
  https://jira.spring.io/browse/SPR-8093

- Clean up nohttp allowlist.lines

Closes gh-28876

spring-web/src/main/java/org/springframework/http/converter/json/JsonbHttpMessageConverter.java

@@ -31,7 +31,7 @@ import org.springframework.util.Assert;
 /**
  * Implementation of {@link org.springframework.http.converter.HttpMessageConverter}
  * that can read and write JSON using the
- * <a href="http://json-b.net/">JSON Binding API</a>.
+ * <a href="https://javaee.github.io/jsonb-spec/">JSON Binding API</a>.
  *
  * <p>This converter can be used to bind to typed beans or untyped {@code HashMap}s.
  * By default, it supports {@code application/json} and {@code application/*+json} with

spring-web/src/main/java/org/springframework/web/util/JavaScriptUtils.java

@@ -21,7 +21,7 @@ package org.springframework.web.util;
  * Escapes based on the JavaScript 1.5 recommendation.
  *
  * <p>Reference:
- * <a href="https://developer.mozilla.org/en-US/docs/JavaScript/Guide/Values,_variables,_and_literals#String_literals">
+ * <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#string_literals">
  * JavaScript Guide</a> on Mozilla Developer Network.
  *
  * @author Juergen Hoeller