Batch mode docs are using V1 primitives

[Eric-Arellano]

They're not using PUBs as input

documentation/docs/run/run-jobs-batch.mdx

Lines 22 to 28 in 491085a

	```python
	jobs = []
	with Batch(backend) as batch:
	estimator = Estimator(batch)
	# calls within this context are part of the batch.
	for obs_set in observable_sets:
	jobs.append(estimator.run(circuits, observables=obs_set))

I think the idea of reusing the same circuits but with different observables is no longer relevant thanks to PUBs? Instead, should the example be using both Sampler and Estimator?