Add zarr as a fix for zar.

Zarr is a new community driven data format, discover more
https://en.wikipedia.org/wiki/Zarr_(data_format)
and I ran into this while fixing a Zarr related project

codespell_lib/data/dictionary.txt

@@ -63596,8 +63596,8 @@ yuo->you
 yuor->your
 yur->your
 yymmetrical->symmetrical
-zar->czar
-zars->czars
+zar->czar, zarr
+zars->czars, zarrs
 zeebra->zebra
 zeebras->zebras
 zefer->zephyr