Fix grammar and update link in Javadoc for SimpleThreadScope

spring-context/src/main/java/org/springframework/context/support/SimpleThreadScope.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,15 +26,19 @@ import org.springframework.beans.factory.ObjectFactory;
 import org.springframework.beans.factory.config.Scope;
 import org.springframework.core.NamedThreadLocal;
 
+
 /**
  * Thread-backed {@link Scope} implementation.
  *
- * <p><strong>Note</strong> that the {@code SimpleThreadScope} <em>does not clean up any objects</em> associated
- * with it. As such, it's typically preferable to use the {@link org.springframework.web.context.request.RequestScope}
+ * <p><strong>Note</strong> that the {@code SimpleThreadScope} <em>does not clean
+ * up any objects</em> associated with it. As such, it's typically preferable to
+ * use the {@link org.springframework.web.context.request.RequestScope RequestScope}
  * in Web environments.
  *
- * <p>For a implementation of a thread-based {@code Scope} with support for destruction callbacks, refer to <a
- * href="http://www.springbyexample.org/twiki/bin/view/Example/CustomThreadScopeModule">this module</a>.
+ * <p>For an implementation of a thread-based {@code Scope} with support for
+ * destruction callbacks, refer to the <a
+ * href="http://www.springbyexample.org/examples/custom-thread-scope-module.html">Spring
+ * by Example Custom Thread Scope Module</a>.
  *
  * <p>Thanks to Eugene Kuleshov for submitting the original prototype for a thread scope!
  *