Inconsistency in docs vs implementation: `sample_memory_circuit` return value

[bmhowe23]

Also, while looking into this, I coincidentally found an inconsistency in our docs vs implementation, going back to our original public commit. More specifically - I think

cudaqx/docs/sphinx/components/qec/introduction.rst

Line 979 in 1745f90

* Shape: :code:`(num_shots, num_rounds * syndrome_size)`

is inconsistent with the sample_memory_circuit implementation. Our current implementation returns (num_shots * num_rounds, syndrome_size), but the docs say (num_shots, num_rounds * syndrome_size). I'll open a new issue for this; just noting it here for your awareness.

Originally posted by @bmhowe23 in #216 (comment)