📝 Updated docs for path-params (#1521)

* Added response example; URL for quick access; typo fixes

* Added line breaks for readability

* Fix typo on redoc url

* 📝 Update format, links, rewordings

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

docs_src/path_params/tutorial005.py

@@ -16,6 +16,8 @@ app = FastAPI()
 async def get_model(model_name: ModelName):
     if model_name == ModelName.alexnet:
         return {"model_name": model_name, "message": "Deep Learning FTW!"}
+
     if model_name.value == "lenet":
         return {"model_name": model_name, "message": "LeCNN all the images"}
+
     return {"model_name": model_name, "message": "Have some residuals"}