Add keywords to the registry?

[maelle]

When searching for a block to add, "sort", and "arrange" show the "sort rows" block but not "order" although that might be a natural word to type?

"order" comes up in https://github.com/BristolMyersSquibb/blockr.dplyr/blob/6ca64776083f789a21f529716960d420614e127e/R/arrange.R#L3