fix(config): update OpenAPI globs to support nested paths (#2750)

Fix OpenAPI file type configuration to support `openapi.yaml` and
`openapi.*.yaml` anywhere.

- [x] Plugin tests passed with snapshot created (`npm test spectral`).
- [x] Manual testing with a project using Spectral.

Author: cussiol

qlty-config/default.toml

@@ -316,7 +316,7 @@ globs = ["*.coffee"]
 globs = ["*.swift"]
 
 [file_types.openapi]
-globs = ["openapi.yaml", "openapi.*.yaml"]
+globs = ["**/openapi.yaml", "**/openapi.*.yaml"]
 
 [file_types.scala]
 globs = ["*.scala"]