Docs: Update sphinx from 7.x to 9.x (#5755)

* Docs: Update sphinx from 7.x to 9.x

* Update docs.yml

doc/api/deviceauth.rst

@@ -39,7 +39,7 @@ as well as the type of underlying hardware. Example:
        "rsa_pubkey": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqh…nswIDAQAB\n-----END PUBLIC KEY-----\n"
    }
 
-The ``rsa_pubkey`` is optional any only required for certain fatures such as working with reusable
+The ``rsa_pubkey`` is optional any only required for certain features such as working with reusable
 media and NFC cryptography.
 
 Every initialization token can only be used once. On success, you will receive a response containing

doc/api/resources/item_program_times.rst

@@ -46,28 +46,28 @@ Endpoints
       Vary: Accept
       Content-Type: application/json
 
-   {
-      "count": 3,
-      "next": null,
-      "previous": null,
-      "results": [
-         {
-            "id": 2,
-            "start": "2025-08-14T22:00:00Z",
-            "end": "2025-08-15T00:00:00Z"
-         },
-         {
-            "id": 3,
-            "start": "2025-08-12T22:00:00Z",
-            "end": "2025-08-13T22:00:00Z"
-         },
-         {
-            "id": 14,
-            "start": "2025-08-15T22:00:00Z",
-            "end": "2025-08-17T22:00:00Z"
-         }
-      ]
-   }
+      {
+         "count": 3,
+         "next": null,
+         "previous": null,
+         "results": [
+            {
+               "id": 2,
+               "start": "2025-08-14T22:00:00Z",
+               "end": "2025-08-15T00:00:00Z"
+            },
+            {
+               "id": 3,
+               "start": "2025-08-12T22:00:00Z",
+               "end": "2025-08-13T22:00:00Z"
+            },
+            {
+               "id": 14,
+               "start": "2025-08-15T22:00:00Z",
+               "end": "2025-08-17T22:00:00Z"
+            }
+        ]
+      }
 
    :param organizer: The ``slug`` field of the organizer to fetch
    :param event: The ``slug`` field of the event to fetch