OCaml HTML5 parser/serialiser based on Python's JustHTML

requests: add missing Uri module re-export

The .mli file declared `module Uri = Uri` but the implementation
was missing it, causing a build error.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

+4
+4
ocaml-requests/lib/requests.ml
··· 1330 1330 set_tls_tracing_level Logs.Warning 1331 1331 end 1332 1332 1333 + (** {1 Supporting Types} *) 1334 + 1335 + module Uri = Uri 1336 +