API: Add clarification and cleanup autodocs

It's possible to override parts of the example JSON to give proper
examples of values.

Signed-off-by: kingbri <bdashore3@proton.me>

main.py

@@ -51,7 +51,14 @@ from logger import init_logger
 
 logger = init_logger(__name__)
 
-app = FastAPI()
+app = FastAPI(
+    title="TabbyAPI",
+    summary="An OAI compatible exllamav2 API that's both lightweight and fast",
+    description=(
+        "This docs page is not meant to send requests! Please use a service "
+        "like Postman or a frontend UI."
+    ),
+)
 
 # Globally scoped variables. Undefined until initalized in main
 MODEL_CONTAINER: Optional[ModelContainer] = None