.htaccess Redirecting http://ift.tt/2ooeWMH to http://ift.tt/1dGpZRp

I want to redirect domain sub folder index.html to it's root directory

Example

current: http://ift.tt/2yJVtZr 
expected: https://example.com/en/

/en/ is sub folder in https://example.com when user types http://ift.tt/2yJVtZr they should be redirected to https://example.com/en/

I have used the following code but it is redirecting to https://example.com

RewriteCond %{THE_REQUEST} ^.*/index.html
RewriteRule ^(.*)index.html$ http://ift.tt/2yPsDZL [R=301,L]
RewriteRule ^(.*)index$ http://ift.tt/2yPsDZL [R=301,L]