correct capitalization of WordPress (mmistakes#1381)

Author: coliff

docs/_docs/05-configuration.md

@@ -339,7 +339,7 @@ comments:
 
 Transform user comments into `_data` files that live inside of your GitHub repository by enabling Staticman.
 
-**Note:** Looking to migrate comments from a Wordpress based site? Give [this tool](https://github.com/arthurlacoste/wordpress-comments-jekyll-staticman) a try. 
+**Note:** Looking to migrate comments from a WordPress based site? Give [this tool](https://github.com/arthurlacoste/wordpress-comments-jekyll-staticman) a try. 
 {: .notice--info}
 
 ###### Add Staticman as a Collaborator