Polish Javadoc for @Autowired

See gh-23263

spring-beans/src/main/java/org/springframework/beans/factory/annotation/Autowired.java

@@ -28,11 +28,11 @@ import java.lang.annotation.Target;
  * {@link javax.inject.Inject} annotation, adding required-vs-optional semantics.
  *
  * <h3>Autowired Constructors</h3>
- * <p>Only one constructor of any given bean class may declare this annotation with
- * the 'required' attribute set to {@code true}, indicating <i>the</i> constructor
- * to autowire when used as a Spring bean. Furthermore, if the 'required' attribute
- * is set to {@code true}, only a single constructor may be annotated with
- * {@code @Autowired}. If multiple <i>non-required</i> constructors declare the
+ * <p>Only one constructor of any given bean class may declare this annotation with the
+ * {@link #required} attribute set to {@code true}, indicating <i>the</i> constructor
+ * to autowire when used as a Spring bean. Furthermore, if the {@code required}
+ * attribute is set to {@code true}, only a single constructor may be annotated
+ * with {@code @Autowired}. If multiple <i>non-required</i> constructors declare the
  * annotation, they will be considered as candidates for autowiring. The constructor
  * with the greatest number of dependencies that can be satisfied by matching beans
  * in the Spring container will be chosen. If none of the candidates can be satisfied,
@@ -60,10 +60,10 @@ import java.lang.annotation.Target;
  * reference documentation for details).
  *
  * <h3>Multiple Arguments and 'required' Semantics</h3>
- * <p>In the case of a multi-arg constructor or method, the 'required' parameter is
- * applicable to all arguments. Individual parameters may be declared as Java-8 style
+ * <p>In the case of a multi-arg constructor or method, the {@link #required} attribute
+ * is applicable to all arguments. Individual parameters may be declared as Java-8 style
  * {@link java.util.Optional} or, as of Spring Framework 5.0, also as {@code @Nullable}
- * or a not-null parameter type in Kotlin, overriding the base required semantics.
+ * or a not-null parameter type in Kotlin, overriding the base 'required' semantics.
  *
  * <h3>Autowiring Arrays, Collections, and Maps</h3>
  * <p>In case of an array, {@link java.util.Collection}, or {@link java.util.Map}