Fix book known recipe highlighting.

src/item.cpp

@@ -1114,9 +1114,9 @@ std::string item::info( bool showtext, std::vector<iteminfo> &info ) const
                    // In case the recipe is known, but has a different name in the book, use the
                    // real name to avoid confusing the player.
                    const std::string name = item::nname( elem.recipe->result );
                    recipe_list.push_back( string_format( "<color_ltgray>%s</color>", name.c_str() ) );
                    recipe_list.push_back( "<bold>" + name + "</bold>" );
                } else {
                    recipe_list.push_back( elem.name );
                    recipe_list.push_back( "<dark>" + elem.name + "</dark>" );
                }
            }
            if( !recipe_list.empty() ) {
@@ -1135,6 +1135,7 @@ std::string item::info( bool showtext, std::vector<iteminfo> &info ) const
                                              ngettext( "This book contains %1$d crafting recipe: %2$s",
                                                        "This book contains %1$d crafting recipes: %2$s", recipe_list.size() ),
                                              recipe_list.size(), recipes.c_str() );

                insert_separation_line();
                info.push_back( iteminfo( "DESCRIPTION", recipe_line ) );
            }