Как сделать 301 редирект в htaccess с адреса со слэшем на конце?

Options -Indexes 
ErrorDocument 404 /404.php
php_value magic_quotes_gpc off

<IfModule mod_php5.c>
  php_flag allow_call_time_pass_reference 1
  php_flag session.use_trans_sid off

  #php_value display_errors 1

  #php_value mbstring.func_overload 2
  #php_value mbstring.internal_encoding UTF-8
</IfModule>

<IfModule mod_rewrite.c>
  Options +FollowSymLinks
  RewriteEngine On
 RewriteBase /
 RewriteCond %{REQUEST_FILENAME} !-f
 RewriteCond %{REQUEST_FILENAME} !-d
 RewriteCond %{REQUEST_URI} !-f
 RewriteCond %{REQUEST_URI} !/$
 RewriteCond %{REQUEST_URI} !.html$

  RewriteCond %{REQUEST_FILENAME} !/bitrix/urlrewrite.php$
    RewriteRule ^(.*)$ /bitrix/urlrewrite.php [L]
  RewriteRule .* - [E=REMOTE_USER:%{HTTP:Authorization}]

  RewriteCond %{HTTP_HOST} ^test.com
  RewriteRule ^(.*)$ http://www.test.com/$1 [R=301,L]
  

RewriteCond %{REQUEST_URI} ^/projects/$  
RewriteRule .+ http://www.test.com/projects/test/ [R=301,L]

RewriteCond %{REQUEST_URI} ^/en/projects/$
RewriteRule .+ http://www.test.com/en/projects/test/ [R=301,L]

</IfModule>

<IfModule mod_dir.c>
  DirectoryIndex index.php index.html
</IfModule>

<IfModule mod_expires.c>
  ExpiresActive on
  ExpiresByType image/jpeg "access plus 3 day"
  ExpiresByType image/gif "access plus 3 day"
</IfModule>