Fix typos in Javadoc, reference docs, and code

Closes gh-28822

spring-web/src/main/java/org/springframework/web/client/support/RestGatewaySupport.java

@@ -24,7 +24,7 @@ import org.springframework.util.Assert;
 import org.springframework.web.client.RestTemplate;
 
 /**
- * Convenient super class for application classes that need REST access.
+ * Convenient superclass for application classes that need REST access.
  *
  * <p>Requires a {@link ClientHttpRequestFactory} or a {@link RestTemplate} instance to be set.
  *

spring-web/src/main/java/org/springframework/web/context/request/AbstractRequestAttributesScope.java

@@ -28,7 +28,7 @@ import org.springframework.lang.Nullable;
  * this class which {@link RequestAttributes} scope to read attributes from.
  *
  * <p>Subclasses may wish to override the {@link #get} and {@link #remove}
- * methods to add synchronization around the call back into this super class.
+ * methods to add synchronization around the call back into this superclass.
  *
  * @author Rod Johnson
  * @author Juergen Hoeller

spring-web/src/main/java/org/springframework/web/method/HandlerTypePredicate.java

@@ -128,7 +128,7 @@ public final class HandlerTypePredicate implements Predicate<Class<?>> {
 
 	/**
 	 * Match handlers that are assignable to a given type.
-	 * @param types one or more handler super types
+	 * @param types one or more handler supertypes
 	 */
 	public static HandlerTypePredicate forAssignableType(Class<?>... types) {
 		return new Builder().assignableType(types).build();
@@ -187,7 +187,7 @@ public final class HandlerTypePredicate implements Predicate<Class<?>> {
 
 		/**
 		 * Match handlers that are assignable to a given type.
-		 * @param types one or more handler super types
+		 * @param types one or more handler supertypes
 		 */
 		public Builder assignableType(Class<?>... types) {
 			this.assignableTypes.addAll(Arrays.asList(types));