org-exp.el (org-export-language-setup): Use "Sommaire" for the translation of "Table of contents".

* org-exp.el (org-export-language-setup): Use "Sommaire"
for the french translation of "Table of contents", to avoid a
possible bug when exporting to ODT.

lisp/org-exp.el

@@ -190,7 +190,7 @@ This option can also be set with the +OPTIONS line, e.g. \"-:nil\"."
     ("eo"  "Aŭtoro"      "Dato" "Enhavo" "Piednotoj")
     ("es" "Autor"      "Fecha" "Índice" "Pies de página")
     ("fi" "Tekijä"     "Päivämäärä"   "Sisällysluettelo"  "Alaviitteet")
-    ("fr" "Auteur"     "Date"  "Table des matières" "Notes de bas de page")
+    ("fr" "Auteur"     "Date"  "Sommaire" "Notes de bas de page")
     ("hu" "Szerzõ" "Dátum" "Tartalomjegyzék" "Lábjegyzet")
     ("is" "Höfundur" "Dagsetning" "Efnisyfirlit" "Aftanmálsgreinar")
     ("it" "Autore"     "Data"  "Indice" "Note a piè di pagina")