Correct spelling of 'WordPress' in documentation

Related spelling rule: https://make.wordpress.org/core/handbook/best-practices/spelling/#:~:text=%E2%80%9Ctermmeta%E2%80%9D-,%E2%80%9CWordPress%E2%80%9D,-%E2%80%9CWP%E2%80%9D

Author: slaFFik

docs/client.md

@@ -24,6 +24,6 @@ Here are the list of the supported loaders:
 
 - Laravel
 - Symfony
-- Wordpress
+- WordPress
 - Any composer project out of the box
-- More loaders will come soon
+- More loaders will come soon