Fix incorrect javadoc for ResourceFileSystemConfigBuilder (#695)

* Fix incorrect javadoc for ResourceFileSystemConfigBuilder

* Update ResourceFileSystemConfigBuilder.java

---------

Co-authored-by: Gary Gregory <[email protected]>

Author: turbanoff

commons-vfs2/src/main/java/org/apache/commons/vfs2/provider/res/ResourceFileSystemConfigBuilder.java

@@ -22,7 +22,7 @@
 import org.apache.commons.vfs2.provider.url.UrlFileSystem;
 
 /**
- * The config BUILDER for various FTP configuration options.
+ * Configuration options builder for resources access.
  */
 public final class ResourceFileSystemConfigBuilder extends FileSystemConfigBuilder {