Typo in macro layout and callbacks

Hi guys, 
there seems to be a typo : "record" should be "records":
here : https://github.com/rte-france/grid2viz/blob/ec2f98e95b2c6fc37a3f31c3ae4eece659ceef24/grid2viz/src/macro/macro_lyt.py#L537
and here : https://github.com/rte-france/grid2viz/blob/ec2f98e95b2c6fc37a3f31c3ae4eece659ceef24/grid2viz/src/macro/macro_clbk.py#L354
I should be apple to propose a PR from my current fork.

