title: Add trailing-slash in URL structure
body: <p>Can you please help me to write correctly .htaccess file. I have this:</p>
  
  <pre><code>RewriteEngine On
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteRule ^([^\.]+)$ $1.php [NC,L]
  </code></pre>
  
  <p>So it rewrites from domanname.com/page.php to domanname.com/page - but if I type in domanname.com/page/ it goes to 404 page. What should I change to correct this problem.</p>
  
  <p>Thanks.</p>