Fix broken link in Javadoc for DynamicPropertySource

Closes gh-24792

Co-authored-by: Sam Brannen <sbrannen@pivotal.io>

spring-test/src/main/java/org/springframework/test/context/DynamicPropertySource.java

@@ -36,9 +36,10 @@ import java.lang.annotation.Target;
  * <p>Methods annotated with {@code @DynamicPropertySource} must be {@code static}
  * and must have a single {@link DynamicPropertyRegistry} argument which is used
  * to add <em>name-value</em> pairs to the {@code Environment}'s set of
- * {@code PropertySources}. Values are dynamic and provided via a {@link Supplier}
- * which is only invoked when the property is resolved. Typically, method references
- * are used to supply values, as in the following example.
+ * {@code PropertySources}. Values are dynamic and provided via a
+ * {@link java.util.function.Supplier} which is only invoked when the property
+ * is resolved. Typically, method references are used to supply values, as in the
+ * following example.
  *
  * <h3>Example</h3>
  *