Update doc

Author: asashour

README.html

@@ -71,7 +71,7 @@
         - GPG automated from ant (in "bundle" target), if possible
 
   7- To tag:
-      git tag -s core-js-2.23 -m "core-js-2.23 released"
+      git tag -s core-js-2.26 -m "core-js-2.26 released"
       git push --tags
 
 - To update Rhino: