Change caml_string_of_array jsoo primitive name after jsoo 6.0 is released

[hhugo]

https://github.com/ocsigen/js_of_ocaml/pull/1798 introduced a new primitive caml_string_of_uint8_array to replace caml_string_of_array. Working with typedarray only allows the primitive to not allocate intermediate arrays.

[dbuenzli]

Will do. Thanks!

[hhugo]

@dbuenzli, shouldn't this be closed ?

[dbuenzli]

I think you are perfectly right, thanks @hhugo. This was fixed by https://github.com/dbuenzli/brr/commit/db4953bb08e461777c06d3c775bc0357a2b8f85a