Use the same wording in Javadoc as in the API name: "empty".

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1458635 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/main/java/org/apache/commons/csv/CSVFormat.java

@@ -66,7 +66,7 @@ public class CSVFormat implements Serializable {
             .build();
 
     /**
-     * Standard comma separated format, as for {@link #RFC4180} but allowing blank lines.
+     * Standard comma separated format, as for {@link #RFC4180} but allowing empty lines.
      * <ul>
      * <li>withDelimiter(',')</li>
      * <li>withQuoteChar('"')</li>