Clarify division rounding

Author: fdwr

index.bs

@@ -3429,7 +3429,7 @@ partial dictionary MLOpSupportLimits {
         - *add*: Add the values of the two input tensors, element-wise.
         - *sub*: Subtract the values of the second input tensor from the values of the first input tensor, element-wise.
         - *mul*: Multiply the values of the two input tensors, element-wise.
-        - *div*: Divide the values of the first input tensor with the values of the second tensor, element-wise.
+        - *div*: Divide the values of the first input tensor with the values of the second tensor, element-wise. Integer types are truncated toward zero.
         - *max*: Select the greater values of the two input tensors, element-wise.
         - *min*: Select the lesser values of the two input tensors, element-wise.
         - *pow*: Compute the values of the values of the first input tensor to the power of the values of the second input tensor, element-wise.