📝 Update source examples and docs from Python 3.9 to 3.10 (#14900)

docs_src/path_params/tutorial003b_py310.py

@@ -0,0 +1,13 @@
+from fastapi import FastAPI
+
+app = FastAPI()
+
+
+@app.get("/users")
+async def read_users():
+    return ["Rick", "Morty"]
+
+
+@app.get("/users")
+async def read_users2():
+    return ["Bean", "Elfo"]