I want to change my domain name http://flexy.tk to https://flexy.tk and I don't know what to edit in this .htaccess file I am new so plz help in detail and I don't want to get any risk but I try I changed the last line from http to https but I don't know is it working or not so thanks in advance
RewriteEngine on
RewriteCond %{HTTP_HOST} ^www\.flexy\.tk$
RewriteCond %{REQUEST_URI} !^/[0-9]+\..+\.cpaneldcv$
RewriteCond %{REQUEST_URI} !^/[A-F0-9]{32}\.txt(?:\ Comodo\ DCV)?$
RewriteCond %{REQUEST_URI} !^/\.well-known/acme-challenge/[0-9a-zA-Z_-]+$
RewriteRule ^/?$ "http\:\/\/flexy\.tk\/" [R=301,L]
before giving downgrade try to help first friend