Polish "URL Cleanup"

Closes gh-397

src/main/java/org/springframework/samples/petclinic/owner/PetRepository.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2012-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,7 +23,8 @@ import org.springframework.transaction.annotation.Transactional;
 
 /**
  * Repository class for <code>Pet</code> domain objects All method names are compliant with Spring Data naming
- * conventions so this interface can easily be extended for Spring Data See here: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/jpa.repositories.html#jpa.query-methods.query-creation
+ * conventions so this interface can easily be extended for Spring Data.
+ * See: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.query-methods.query-creation
  *
  * @author Ken Krebs
  * @author Juergen Hoeller

src/main/java/org/springframework/samples/petclinic/vet/VetRepository.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2012-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,7 +24,8 @@ import org.springframework.transaction.annotation.Transactional;
 
 /**
  * Repository class for <code>Vet</code> domain objects All method names are compliant with Spring Data naming
- * conventions so this interface can easily be extended for Spring Data See here: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/jpa.repositories.html#jpa.query-methods.query-creation
+ * conventions so this interface can easily be extended for Spring Data.
+ * See: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.query-methods.query-creation
  *
  * @author Ken Krebs
  * @author Juergen Hoeller

src/main/java/org/springframework/samples/petclinic/visit/VisitRepository.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2012-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,7 +23,8 @@ import org.springframework.samples.petclinic.model.BaseEntity;
 
 /**
  * Repository class for <code>Visit</code> domain objects All method names are compliant with Spring Data naming
- * conventions so this interface can easily be extended for Spring Data See here: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/jpa.repositories.html#jpa.query-methods.query-creation
+ * conventions so this interface can easily be extended for Spring Data.
+ * See: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.query-methods.query-creation
  *
  * @author Ken Krebs
  * @author Juergen Hoeller