Fixed typo: "occured"->"occurred"

(cherry picked from commit be0b71c)

spring-oxm/src/main/java/org/springframework/oxm/jaxb/Jaxb2Marshaller.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -897,7 +897,7 @@ public class Jaxb2Marshaller implements MimeMarshaller, MimeUnmarshaller, Generi
 	/**
 	 * Convert the given {@code JAXBException} to an appropriate exception from the
 	 * {@code org.springframework.oxm} hierarchy.
-	 * @param ex {@code JAXBException} that occured
+	 * @param ex {@code JAXBException} that occurred
 	 * @return the corresponding {@code XmlMappingException}
 	 */
 	protected XmlMappingException convertJaxbException(JAXBException ex) {

spring-oxm/src/main/java/org/springframework/oxm/jibx/JibxMarshaller.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -461,7 +461,7 @@ public class JibxMarshaller extends AbstractMarshaller implements InitializingBe
 	 * {@code org.springframework.oxm} hierarchy.
 	 * <p>A boolean flag is used to indicate whether this exception occurs during marshalling or
 	 * unmarshalling, since JiBX itself does not make this distinction in its exception hierarchy.
-	 * @param ex {@code JiBXException} that occured
+	 * @param ex {@code JiBXException} that occurred
 	 * @param marshalling indicates whether the exception occurs during marshalling ({@code true}),
 	 * or unmarshalling ({@code false})
 	 * @return the corresponding {@code XmlMappingException}