docs: address feedback from PR #103

This commit addresses the feedback provided by javier-godoy on PR #103:

- Updated Javadoc for `AttributeConstraint.java` to clarify it as a
specialization of `Constraint`.
- Updated Javadoc for `ConstraintTransformerJpaImpl.java` and
`ConstraintSpecification.java` to use `{@code}` for supertypes and
implemented interfaces, as per FlowingCode development conventions.
- Added author information to the License section in README.md.

Author: google-labs-jules[bot]

README.md

@@ -104,6 +104,8 @@ Contributions are welcome! Please follow the process outlined below:
 4. Reference the issue in your commit messages.
 5. Send a pull request and comment on the issue once it's ready.
 
-## License
+## License & Author
 
-Apache License 2.0. See [LICENSE.txt](LICENSE.txt).
+This library is distributed under Apache License 2.0. For license terms, see LICENSE.txt.
+
+Backend Core is written by Flowing Code S.A.

backend-core-business-spring-impl/src/main/java/com/flowingcode/backendcore/service/ConstraintSpecification.java

@@ -14,7 +14,8 @@
 import lombok.RequiredArgsConstructor;
 
 /**
- * Spring Data JPA {@link org.springframework.data.jpa.domain.Specification} that applies a model {@link com.flowingcode.backendcore.model.Constraint}.
+ * Spring Data JPA {@code Specification} that applies a model
+ * {@code Constraint}.
  *
  * @param <T> the entity type
  * @author jgodoy

backend-core-data-impl/src/main/java/com/flowingcode/backendcore/dao/jpa/ConstraintTransformerJpaImpl.java

@@ -45,7 +45,8 @@
 import lombok.RequiredArgsConstructor;
 
 /**
- * JPA implementation of {@link com.flowingcode.backendcore.model.ConstraintTransformer} for converting model constraints into JPA {@link jakarta.persistence.criteria.Predicate} instances.
+ * JPA implementation of {@code ConstraintTransformer} for converting
+ * model constraints into JPA {@code Predicate} instances.
  *
  * @author jgodoy
  */

backend-core-model/src/main/java/com/flowingcode/backendcore/model/constraints/AttributeConstraint.java

@@ -22,7 +22,7 @@
 import com.flowingcode.backendcore.model.Constraint;
 
 /**
- * Marker interface for constraints applied to entity attributes.
+ * Specialization of {@code Constraint} that applies to entity attributes.
  *
  * @author jgodoy
  */