adding java doc optimization for method setHeaderComments()

Author: gbidsilva

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

@@ -521,7 +521,7 @@ public Builder setHeader(final String... header) {
         }
 
         /**
-         * Sets the header comments set to the given values. The comments will be printed first, before the headers. This setting is ignored by the parser.
+         * Sets the header comments set to the given values. The comments will be printed first with the provided comment marker set by {@link Builder#setCommentMarker(char)}, before the headers. This setting is ignored by the parser.
          *
          * <pre>
          * builder.setHeaderComments(&quot;Generated by Apache Commons CSV.&quot;, Instant.now());
@@ -536,7 +536,7 @@ public Builder setHeaderComments(final Object... headerComments) {
         }
 
         /**
-         * Sets the header comments set to the given values. The comments will be printed first, before the headers. This setting is ignored by the parser.
+         * Sets the header comments set to the given values. The comments will be printed first with the provided comment marker set by {@link Builder#setCommentMarker(char)}, before the headers. This setting is ignored by the parser.
          *
          * <pre>
          * Builder.setHeaderComments(&quot;Generated by Apache Commons CSV.&quot;, Instant.now());