Fix link

Author: Bellangelo

registries/_namespace/oas-draft.md

@@ -6,7 +6,7 @@ layout: default
 ---
 
 {% capture summary %}
-The `x-{{page.slug}}-` prefix is reserved for extensions created as part of the [draft features(https://github.com/OAI/OpenAPI-Specification/blob/main/DEVELOPMENT.md#draft-features)] process. These extensions are available for use by anyone.
+The `x-{{page.slug}}-` prefix is reserved for extensions created as part of the [draft features](https://github.com/OAI/OpenAPI-Specification/blob/main/DEVELOPMENT.md#draft-features) process. These extensions are available for use by anyone.
 {% endcapture %}
 
 {% include namespace-entry.md summary=summary %}