Fixes to Programming Mesh of Devices Tech Report

[cfjchu]

@johanna-rock-tt reported a few typos and made some suggestions:

typos:
3.2 Programming Example: Sharding in the code below Let's now transfer to device the device ids don’t match the text below: in the example you have 0, 1 but int he text in the visualize_mesh_devices output you write about 11 and 10
In https://github.com/tenstorrent/tt-metal/blob/a39f99800564fa2bb02ebb231dc13cd2b8d92[…]ces/Programming%20Mesh%20of%20Devices%20with%20TT-NN.md?plain=1 you have a device_mesh with 2,4 grid, but you create a tensor with 32,128. I think this should be 32, 256 to have a tile on each device.
Same thing here: https://github.com/tenstorrent/tt-metal/blob/a39f99800564fa2bb02ebb231dc13cd2b8d92[…]ces/Programming%20Mesh%20of%20Devices%20with%20TT-NN.md?plain=1

I think it would also be helpful to indicate what the output dims are like (e.g. after gathering on dim=3 along cluster_axis=0 it would be 4 shards with size 32x128, sharded in width but replicated in height or similar)