[ref-config] Less differences between gcc<10 and gcc==10

reference-configuration.md

@@ -6,7 +6,7 @@ compiling Frama-C+dev, on a machine with gcc <= 9[^gcc-10]
 - apron.v0.9.12 (for eva, optional)
 - lablgtk.2.18.11 | lablgtk3.3.1.1 + lablgtk3-sourceview3.3.1.1
 - mlgmpidl.1.2.12 (for eva, optional)
-- ocamlfind.1.8.0
+- ocamlfind.1.8.1
 - ocamlgraph.1.8.8
 - ppx_deriving_yojson.3.5.2 (for mdr, optional)
 - why3.1.3.1
@@ -17,5 +17,4 @@ compiling Frama-C+dev, on a machine with gcc <= 9[^gcc-10]
 [^gcc-10]: As mentioned in this [OCaml PR](https://github.com/ocaml/ocaml/issues/9144)
 gcc 10 changed its default linking conventions to make them more stringent,
 resulting in various linking issues. In particular, only OCaml 4.10 can be
-linked against gcc-10. With respect to the list above, this also means using
-ocamlfind.1.8.1 and the development version of lablgtk (https://github.com/garrigue/lablgtk)
+linked against gcc-10.