[reference-types] behavior of out-of-bound in table.fill

[12101111]

https://github.com/WebAssembly/spec/blob/main/proposals/reference-types/Overview.md

table.fill traps when range+length > size of the table, but only after filling range up to size (analoguous to memory.fill)

I think the documentation corresponds to the old behavior and has not been updated after WebAssembly/bulk-memory-operations#111

[rossberg]

Please see the README: the proposal directory contains archived historical documents that are not updated. The only relevant source of truth is the spec itself, which specifies a bounds check before any write.