Update docs/src/main/asciidoc/extension-maturity-matrix.adoc

Co-authored-by: Max Rydahl Andersen <max.andersen@gmail.com>

docs/src/main/asciidoc/extension-maturity-matrix.adoc

@@ -68,7 +68,7 @@ The Writing Extensions guide has more guidance on xref:writing-extensions.adoc#h
 Quarkus extensions should aim to xref:writing-extensions.adoc#expose-your-components-via-cdi[expose components via CDI], so that they can be consumed in a frictionless way by user applications.
 Having everything injectable as CDI beans also helps testing, especially xref:getting-started-testing#mock-support[mocking].
 
-=== Dev Service (if there is an external service)
+=== Dev Service
 
 Dev Services are generally relevant for extensions that "connect" to something, such as databases for datasources, a keycloak instance for security, an Apache Kafka instance for messaging, etc.