openapi/ogcapi-tiles-1.bundled.yaml: Added bundled version

- README.md: Pointing SwaggerUI to this file instead so speed up loading from GitHub
- Automatically generated with the following commands from the openapi/ directory:
   swagger-cli bundle ogcapi-tiles-1.yaml > ogcapi-tiles-1.bundled.yaml

README.md

@@ -8,7 +8,7 @@ Please see the latest compiled draft specification available in [HTML](http://do
 
 This specification relies on the [_Tile Matrix Set and Tile Set Metadata_ standard](https://github.com/opengeospatial/2D-Tile-Matrix-Set/) (draft version 2.0: [HTML](https://docs.opengeospatial.org/DRAFTS/17-083r4.html) or [PDF](https://docs.opengeospatial.org/DRAFTS/17-083r4.pdf)).
 
-See the latest [OpenAPI definition](https://github.com/opengeospatial/ogcapi-tiles/tree/master/openapi) with [SwaggerUI](https://petstore.swagger.io/?url=https://raw.githubusercontent.com/opengeospatial/ogcapi-tiles/master/openapi/ogcapi-tiles-1.yaml).
+See the latest [OpenAPI definition](https://github.com/opengeospatial/ogcapi-tiles/tree/master/openapi) with [SwaggerUI](https://petstore.swagger.io/?url=https://raw.githubusercontent.com/opengeospatial/ogcapi-tiles/master/openapi/ogcapi-tiles-1.bundled.yaml).
 
 ## Overview