Fix broken links in JavaDoc

Issue: SPR-17174

spring-core/src/main/java/org/springframework/util/function/SingletonSupplier.java

@@ -22,7 +22,7 @@
 import org.springframework.util.Assert;
 
 /**
- * A {@link java.util.function Supplier} decorator that caches a singleton result and
+ * A {@link java.util.function.Supplier} decorator that caches a singleton result and
  * makes it available from {@link #get()} (nullable) and {@link #obtain()} (null-safe).
  *
  * <p>A {@code SingletonSupplier} can be constructed via {@code of} factory methods

spring-test/src/main/java/org/springframework/test/web/reactive/server/WebTestClient.java

@@ -363,8 +363,10 @@ interface RouterFunctionSpec extends MockServerSpec<RouterFunctionSpec> {
 
 
 	/**
-	 * Steps for customizing the {@link WebClient} used to test with
-	 * internally delegating to a {@link WebClient.Builder}.
+	 * Steps for customizing the {@link WebClient} used to test with,
+	 * internally delegating to a
+	 * {@link org.springframework.web.reactive.function.client.WebClient.Builder
+	 * WebClient.Builder}.
 	 */
 	interface Builder {
 

spring-web/src/main/java/org/springframework/web/client/ExtractingResponseErrorHandler.java

@@ -29,15 +29,16 @@
 import org.springframework.util.CollectionUtils;
 
 /**
- * Implementation of {@link ResponseErrorHandler} that uses {@link HttpMessageConverter ResponseErrorHandler} that uses {@link HttpMessageConverters} to
- * convert HTTP error responses to {@link RestClientException}.
+ * Implementation of {@link ResponseErrorHandler} that uses {@link HttpMessageConverter
+ * HttpMessageConverters} to convert HTTP error responses to {@link RestClientException
+ * RestClientExceptions}.
  *
  * <p>To use this error handler, you must specify a
  * {@linkplain #setStatusMapping(Map) status mapping} and/or a
  * {@linkplain #setSeriesMapping(Map) series mapping}. If either of these mappings has a match
  * for the {@linkplain ClientHttpResponse#getStatusCode() status code} of a given
  * {@code ClientHttpResponse}, {@link #hasError(ClientHttpResponse)} will return
- * {@code true} and {@link #handleError(ClientHttpResponse)} will attempt to use the
+ * {@code true}, and {@link #handleError(ClientHttpResponse)} will attempt to use the
  * {@linkplain #setMessageConverters(List) configured message converters} to convert the response
  * into the mapped subclass of {@link RestClientException}. Note that the
  * {@linkplain #setStatusMapping(Map) status mapping} takes precedence over

spring-web/src/main/java/org/springframework/web/server/handler/FilteringWebHandler.java

@@ -26,8 +26,8 @@
 import org.springframework.web.server.WebHandler;
 
 /**
- * {@link WebHandler} decorator that invokes a chain of {@link WebFilter WebHandler} decorator that invokes a chain of {@link WebFilters}
- * before the delegate {@link WebHandler}.
+ * {@link WebHandlerDecorator} that invokes a chain of {@link WebFilter WebFilters}
+ * before invoking the delegate {@link WebHandler}.
  *
  * @author Rossen Stoyanchev
  * @since 5.0

spring-web/src/main/java/org/springframework/web/server/handler/WebHandlerDecorator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -23,7 +23,7 @@
 import org.springframework.web.server.WebHandler;
 
 /**
- * {@link WebHandler} that decorates and delegates to another.
+ * {@link WebHandler} that decorates and delegates to another {@code WebHandler}.
  *
  * @author Rossen Stoyanchev
  * @since 5.0

spring-webflux/src/main/java/org/springframework/web/reactive/config/WebFluxConfigurer.java

@@ -45,7 +45,7 @@ public interface WebFluxConfigurer {
 
 	/**
 	 * Configure how the content type requested for the response is resolved
-	 * when  handling reqests with annotated controllers.
+	 * when handling requests with annotated controllers.
 	 * @param builder for configuring the resolvers to use
 	 */
 	default void configureContentTypeResolver(RequestedContentTypeResolverBuilder builder) {
@@ -96,16 +96,16 @@ default void configureHttpMessageCodecs(ServerCodecConfigurer configurer) {
 	}
 
 	/**
-	 * Add custom {@link Converter}s and {@link Formatter Converter}s and {@link Formatters} for performing type
-	 * conversion and formatting of annotated controller method arguments.
+	 * Add custom {@link Converter Converters} and {@link Formatter Formatters} for
+	 * performing type conversion and formatting of annotated controller method arguments.
 	 */
 	default void addFormatters(FormatterRegistry registry) {
 	}
 
 	/**
 	 * Provide a custom {@link Validator}.
 	 * <p>By default a validator for standard bean validation is created if
-	 * bean validation api is present on the classpath.
+	 * bean validation API is present on the classpath.
 	 * <p>The configured validator is used for validating annotated controller
 	 * method arguments.
 	 */

spring-webmvc/src/main/java/org/springframework/web/servlet/handler/HandlerExceptionResolverComposite.java

@@ -27,7 +27,8 @@
 import org.springframework.web.servlet.ModelAndView;
 
 /**
- * A {@link HandlerExceptionResolver} that delegates to a list of other {@link HandlerExceptionResolver HandlerExceptionResolver} that delegates to a list of other {@link HandlerExceptionResolvers}.
+ * A {@link HandlerExceptionResolver} that delegates to a list of other
+ * {@link HandlerExceptionResolver HandlerExceptionResolvers}.
  *
  * @author Rossen Stoyanchev
  * @since 3.1
@@ -66,7 +67,8 @@ public int getOrder() {
 
 	/**
 	 * Resolve the exception by iterating over the list of configured exception resolvers.
-	 * The first one to return a ModelAndView instance wins. Otherwise {@code null} is returned.
+	 * <p>The first one to return a {@link ModelAndView} wins. Otherwise {@code null}
+	 * is returned.
 	 */
 	@Override
 	@Nullable