fix: typo's in documentation

.github/DISCUSSION_TEMPLATE/questions.yml

@@ -42,6 +42,8 @@ body:
           required: true
         - label: I already checked if it is not related to FastAPI but to [ReDoc](https://github.com/Redocly/redoc).
           required: true
+        - label: I already checked if it is not related to FastAPI but to [Scalar](https://github.com/scalar/scalar).
+          required: true
   - type: checkboxes
     id: help
     attributes:

fastapi/applications.py

@@ -450,7 +450,7 @@ class FastAPI(Starlette):
             Doc(
                 """
                 The path to the alternative automatic interactive API documentation
-                provided by ReDoc.
+                provided by Scalar.
 
                 The default URL is `/scalar`. You can disable it by setting it to `None`.