RewriteRule ^([A-Za-z0-9-]+).html$ https://www.heikemueller-massagen.de/ [L]
RewriteRule ^([A-Za-z0-9-]+).txt$ https://www.heikemueller-massagen.de/ [L]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule . https://www.heikemueller-massagen.de/ [L]