[R2] Fix specialty typo and add migration to rename it on database

src/main/java/com/mirna/hospitalmanagementapi/domain/entities/Doctor.java

@@ -145,7 +145,7 @@ public class Doctor {
 	/**
 	  * Returns the specialty
 	 * @return An enum class representing the doctor's specialty.
-	 * @see Speciality
+	 * @see Specialty
 	 */
 	public Specialty getSpecialty() {
 		return specialty;

src/main/resources/db.migration/V2_alter-table-rename-column-doctors.sql

@@ -0,0 +1 @@
+ALTER TABLE doctors RENAME COLUMN speciality TO specialty;