fix MllamaVisionAttention typehint (huggingface#35975)

* fix MllamaVisionAttention typehint

Signed-off-by: Kyle Sayers <kylesayrs@gmail.com>

* Update src/transformers/models/mllama/modeling_mllama.py

Co-authored-by: Raushan Turganbay <raushan.turganbay@alumni.nu.edu.kz>

* fix suggestion

Signed-off-by: Kyle Sayers <kylesayrs@gmail.com>

---------

Signed-off-by: Kyle Sayers <kylesayrs@gmail.com>
Co-authored-by: Raushan Turganbay <raushan.turganbay@alumni.nu.edu.kz>

src/transformers/models/mllama/modeling_mllama.py

@@ -192,7 +192,7 @@ def forward(
         hidden_state: torch.Tensor,
         attention_mask: Optional[torch.Tensor] = None,
         output_attentions: bool = None,
-    ) -> torch.Tensor:
+    ) -> Tuple[torch.Tensor, Optional[torch.Tensor]]:
         query = self.q_proj(hidden_state)
         key = self.k_proj(hidden_state)
         value = self.v_proj(hidden_state)