Incorrect compilation tutorial

在 x264 windows compile.txt 中x64编译命令./configure --host=x86-64-w64-mingw32 --enable-static --enable-shared  中应该要改为
./configure --host=x86_64-w64-mingw32 --enable-static --enable-shared --extra-ldflags=-Wl,--output-def=libx264.def