Typo in contributing.md (#7909)

Buidler -> Builder

docs/v3.x/getting-started/contributing.md

@@ -6,7 +6,7 @@ Strapi is a community oriented project and we really appreciate every contributi
 
 ### [strapi/strapi](https://github.com/strapi/strapi)
 
-This repository contains the core of Strapi. It means the admin panel, core plugins (Content Manager, Content Type Buidler, etc...), the documentation and the code that runs your Strapi app. You will also find some plugin providers. This is the main repo of the Strapi organization.
+This repository contains the core of Strapi. It means the admin panel, core plugins (Content Manager, Content Type Builder, etc...), the documentation and the code that runs your Strapi app. You will also find some plugin providers. This is the main repo of the Strapi organization.
 
 ### [strapi/buffet](https://github.com/strapi/buffet)