Removed note

Author: jaydrogers

docs/content/docs/3.guide/2.add-spin-to-an-existing-project.md

@@ -56,7 +56,7 @@ Spin will not overwrite any files. It will only create files that don't exist. I
 - `docker-compose.dev.yml`
 - `docker-compose.ci.yml`
 - `docker-compose.prod.yml`
-- `Dockerfile` (if you use the Laravel template)
+- `Dockerfile`
 
 ### Spin will modify the following files:
 - `.gitignore`