Fix typo.

Author: plamentotev

src/main/java/org/codehaus/plexus/archiver/jar/JarToolModularJarArchiver.java

@@ -144,7 +144,7 @@ private boolean isModuleDescriptor( String path )
 
             // the path is a module descriptor if it located
             // into the root of the archive or into the
-            // version are of a multi-release JAR file
+            // version area of a multi-release JAR file
             return prefix.isEmpty() ||
                 MRJAR_VERSION_AREA.matcher( prefix ).matches();
         }