DATACMNS-812 - Fixed PageImpl.toString() to improve readability.

Add one to the getNumber() in PageImpl.toString() since it uses 0-based index.

Original pull request: #154.

src/main/java/org/springframework/data/domain/PageImpl.java

@@ -118,7 +118,7 @@ public class PageImpl<T> extends Chunk<T> implements Page<T> {
 			contentType = content.get(0).getClass().getName();
 		}
 
-		return String.format("Page %s of %d containing %s instances", getNumber(), getTotalPages(), contentType);
+		return String.format("Page %s of %d containing %s instances", getNumber()+1, getTotalPages(), contentType);
 	}
 
 	/*