[iAmMichaelConnor]

Stack

	PR	Change	Builds on
	1 of 4: #26	fix: read boundary sentinel values from the sorted keys	master
	2 of 4: #27	fix: constrain MutSparseArray lookup hints	#26
	3 of 4: #28	fix: support creating sparse arrays from empty inputs	#27
➡ this PR	4 of 4: #29	chore: fix README usage example	#28

Each PR is based on the one above it. Please review and merge in order from the top.

What

The README usage example did not compile: it used Field indices (the API takes u32), an
undefined nonzero_indices in the mutable example, array.ser, and was missing a semicolon.
Fix those, with otherwise the same example.

Testing

The example functions were compiled in a consumer crate against this branch with Noir 1.0.0;
the immutable example passes, and the mutable example's final set fails with
"MutSparseArray::set exceeded maximum size of array", as its comment says.