We want run our WHMCS Pages with out php extentions

[TrippleEx]

We want run all our WHMCS pages without php extentions like the original WHMCS sites

For example, instead of:
https://mydomain.com/dedicated-server.php

like:
https://mydomain.com/dedicated-server

Our current .htaccess looks like:
 

### BEGIN - WHMCS managed rules - DO NOT EDIT BETWEEN WHMCS MARKERS ###
<IfModule mod_rewrite.c>
RewriteEngine on

# RewriteBase is set to "/" so rules do not need updating if the
# installation directory is relocated.  It is imperative that
# there is also a RewriteCond rule later that can effectively get
# the actual value by comparison against the request URI.
#
# If there are _any_ other RewriteBase directives in this file,
# the last entry will take precedence!
RewriteBase /

# Redirect directories to an address with slash
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^(.+[^/])$  $1/ [R]

# Send all remaining (routable paths) through index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# Determine and use the actual base
RewriteCond $0#%{REQUEST_URI} ([^#]*)#(.*)\1$
RewriteRule ^.*$ %2index.php [QSA,L]
</IfModule>
### END - WHMCS managed rules - DO NOT EDIT BETWEEN WHMCS MARKERS ###

Friendly URLs are already set to "Full Friendly Rewrite" WHMCS 8.1.0 General Release (8.1.0-release.1) is running.

How to we have to edit it to get the correct result?

Thanks.

 

Edited January 14, 2021 by TrippleEx