arrow

GH-38053: [C++][Go] Re-generate sources from Schema.fbs (#38054)

### Rationale for this change

Re-generate Go and C++ sources from Flatbuffers specs now including string-view and list-view types.

### What changes are included in this PR?

Documentation fixes on the .fbs files and the generated C++ and Go source files.

### Are these changes tested?

The files should be correct by construction. Existing tests guarantee that no mistake was made in re-generating the files.
* Closes: #38053

Authored-by: Felipe Oliveira Carvalho <felipekde@gmail.com>
Signed-off-by: Antoine Pitrou <antoine@python.org>