Polish contribution

See gh-28790

spring-webflux/src/main/java/org/springframework/web/reactive/resource/PathResourceResolver.java

@@ -146,7 +146,7 @@ public class PathResourceResolver extends AbstractResourceResolver {
 
 	/**
 	 * Perform additional checks on a resolved resource beyond checking whether the
-	 * resources exist and is readable. The default implementation also verifies
+	 * resource exists and is readable. The default implementation also verifies
 	 * the resource is either under the location relative to which it was found or
 	 * is under one of the {@link #setAllowedLocations allowed locations}.
 	 * @param resource the resource to check

spring-webflux/src/main/java/org/springframework/web/reactive/result/method/RequestMappingInfoHandlerMapping.java

@@ -225,7 +225,7 @@ public abstract class RequestMappingInfoHandlerMapping extends AbstractHandlerMe
 
 
 		/**
-		 * Whether there is any partial matches.
+		 * Whether there are any partial matches.
 		 */
 		public boolean isEmpty() {
 			return this.partialMatches.isEmpty();

spring-webflux/src/main/java/org/springframework/web/reactive/result/view/RedirectView.java

@@ -297,10 +297,10 @@ public class RedirectView extends AbstractUrlBasedView {
 	/**
 	 * Whether the given targetUrl has a host that is a "foreign" system in which
 	 * case {@link javax.servlet.http.HttpServletResponse#encodeRedirectURL} will not be applied.
-	 * This method returns {@code true} if the {@link #setHosts(String[])}
+	 * <p>This method returns {@code true} if the {@link #setHosts(String[])}
 	 * property is configured and the target URL has a host that does not match.
 	 * @param targetUrl the target redirect URL
-	 * @return {@code true} the target URL has a remote host, {@code false} if
+	 * @return {@code true} if the target URL has a remote host, {@code false} if
 	 * the URL does not have a host or the "host" property is not configured
 	 */
 	protected boolean isRemoteHost(String targetUrl) {