📝 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/en/docs/tutorial/path-params.md

@@ -85,7 +85,7 @@ And when you open your browser at <a href="http://127.0.0.1:8000/docs" class="ex
 
 And because the generated schema is from the <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md" class="external-link" target="_blank">OpenAPI</a> standard, there are many compatible tools.
 
-Because of this, **FastAPI** itself provides an alternative API documentation (using ReDoc):
+Because of this, **FastAPI** itself provides an alternative API documentation (using ReDoc), which you can access at <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>:
 
 <img src="/img/tutorial/path-params/image02.png">
 
@@ -125,7 +125,7 @@ Import `Enum` and create a sub-class that inherits from `str` and from `Enum`.
 
 By inheriting from `str` the API docs will be able to know that the values must be of type `string` and will be able to render correctly.
 
-And create class attributes with fixed values, those fixed values will be the available valid values:
+Then create class attributes with fixed values, which will be the available valid values:
 
 ```Python hl_lines="1 6 7 8 9"
 {!../../../docs_src/path_params/tutorial005.py!}
@@ -147,7 +147,7 @@ Then create a *path parameter* with a type annotation using the enum class you c
 
 ### Check the docs
 
-Because the available values for the *path parameter* are specified, the interactive docs can show them nicely:
+Because the available values for the *path parameter* are predefined, the interactive docs can show them nicely:
 
 <img src="/img/tutorial/path-params/image03.png">
 
@@ -167,7 +167,7 @@ You can compare it with the *enumeration member* in your created enum `ModelName
 
 You can get the actual value (a `str` in this case) using `model_name.value`, or in general, `your_enum_member.value`:
 
-```Python hl_lines="19"
+```Python hl_lines="20"
 {!../../../docs_src/path_params/tutorial005.py!}
 ```
 
@@ -178,12 +178,21 @@ You can get the actual value (a `str` in this case) using `model_name.value`, or
 
 You can return *enum members* from your *path operation*, even nested in a JSON body (e.g. a `dict`).
 
-They will be converted to their corresponding values before returning them to the client:
+They will be converted to their corresponding values (strings in this case) before returning them to the client:
 
-```Python hl_lines="18 20 21"
+```Python hl_lines="18  21  23"
 {!../../../docs_src/path_params/tutorial005.py!}
 ```
 
+In your client you will get a JSON response like:
+
+```JSON
+{
+  "model_name": "alexnet",
+  "message": "Deep Learning FTW!"
+}
+```
+
 ## Path parameters containing paths
 
 Let's say you have a *path operation* with a path `/files/{file_path}`.

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"}