Clarify definition of a tensor in IR docs (#3792)
Clarify definition of a tensor in IR docs (#3792)

* Clarify definition of a tensor in IR docs

Signed-off-by: Tom Wildenhain <3366478b9695f4a1f3b0bb0f377efd69a07b7f9d@microsoft.com>

* Update docs/IR.md

Fix typo

Co-authored-by: Kevin Chen <7d29c58cc0162d4392d4d22d93b73115ceda68b0@users.noreply.github.com>
Signed-off-by: Tom Wildenhain <3366478b9695f4a1f3b0bb0f377efd69a07b7f9d@microsoft.com>

* Update tensor definition according to review

Signed-off-by: Tom Wildenhain <3366478b9695f4a1f3b0bb0f377efd69a07b7f9d@microsoft.com>

Co-authored-by: Chun-Wei Chen <3d21e1cad9aa0e4aa10838f859be24690cfc357c@gmail.com>
Co-authored-by: Kevin Chen <7d29c58cc0162d4392d4d22d93b73115ceda68b0@users.noreply.github.com>
onnx/onnx,onnx/onnx,onnx/onnx,onnx/onnx