san_francisco.sg: fix file name (typo)

books/volume-2.sb

@@ -128,7 +128,7 @@
     "maxime_le_forestier/comme_un_arbre.sg",
     "maxime_le_forestier/la_rouille.sg",
     "maxime_le_forestier/le_steak.sg",
-    "maxime_le_forestier/san_fransico.sg",
+    "maxime_le_forestier/san_francisco.sg",
     "maxime_le_forestier/education_sentimentale.sg",
     "mes_souliers_sont_rouges/bassin_d_irlande.sg",
     "mes_souliers_sont_rouges/le_cycle_du_vin.sg",

patadata.sbc

@@ -587,7 +587,7 @@
     "maxime_le_forestier/ne_quelque_part.sg", 
     "maxime_le_forestier/parachutiste.sg", 
     "maxime_le_forestier/passer_ma_route.sg", 
-    "maxime_le_forestier/san_fransico.sg", 
+    "maxime_le_forestier/san_francisco.sg", 
     "mc_solaar/caroline.sg", 
     "mes_souliers_sont_rouges/bassin_d_irlande.sg", 
     "mes_souliers_sont_rouges/cahin_caha.sg",