doc: stabilize subpath patterns

PR-URL: #36177
Reviewed-By: Jan Krems <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Daijiro Wachi <[email protected]>
Reviewed-By: Rich Trott <[email protected]>

Author: guybedford

doc/api/packages.md

@@ -319,8 +319,6 @@ analogous to the exports field.
 
 ### Subpath patterns
 
-> Stability: 1 - Experimental
-
 For packages with a small number of exports or imports, we recommend
 explicitly listing each exports subpath entry. But for packages that have
 large numbers of subpaths, this might cause `package.json` bloat and