Serialization documentation

The first paragraph of

https://www.boost.org/doc/libs/1_82_0/libs/serialization/doc/index.html

contains the following sentence:

> Depending on the context, this might used implement object persistence, remote parameter passing or other facility.

It seems to be missing a few words; this is a suggestion to make it a little more readable:

> Depending on the context, this might [be] used [to] implement object persistence, remote parameter passing or other facility.