Update test.ipynb

[mahaalbashir]

Few changes need to be made to the test.ipynb:

• Fix the typos: suppress has two p's

• It would be clear to turn 'check missing' off before the demo of pivot tables, and only on for one specific example - where there needs to be more descriptive help in the markdown cell. I couldn't;t understand what I was being told there or how I would address it as a researcher or TRE output checker

• don't think the 'inspect metadata' is very helpful

• more generally, I wonder if we are creating too complex a session so that it is hard to understand what happens when you do print_outputs() or finalise() because there is so much to scroll through on screen. Perhaps we should restructure the notebook so there is:

a simple example: ps.crosstab -> acro.crosstab (with suppression off) -> acro.crosstab() with suppression on ->print_outputd->remove one->add comments on each,->make exception request-> finalise
a section on 'more things with tables
a section on statical analysis