Fix missing internal documentation link (#2077)

docusaurus/docs/user-docs/content-type-builder/configuring-fields-content-type.md

@@ -8,7 +8,7 @@ sidebar_position: 3
 The Content-type Builder is only accessible to create and update content-types when your Strapi application is in a development environment, else it will be in a read-only mode in other environments.
 :::
 
-Content-types are composed of one or several fields. Each field is designed to contain specific kind of data, filled up in the Content Manager (see [Writing content](#)).
+Content-types are composed of one or several fields. Each field is designed to contain specific kind of data, filled up in the Content Manager (see [Writing content](/user-docs/content-manager/writing-content.md)).
 
 In the Content-type Builder, fields can be added at the creation of a new content-type or component, or afterward when a content-type or component is edited or updated. The following documentation lists all existing regular fields but also tackles the specificities of components and dynamic zones. For each, you will find a definition, explanation of the form they take once in the Content Manager, and instructions to configure them.