correct wrong word

Author: debugly

do-compile/ffmpeg.sh

@@ -243,7 +243,7 @@ cp -f $XC_BUILD_SOURCE/libavutil/libm.h $XC_BUILD_PREFIX/include/libavutil/
 cp -f $XC_BUILD_SOURCE/libavutil/attributes_internal.h $XC_BUILD_PREFIX/include/libavutil/
 cp -f $XC_BUILD_SOURCE/libavcodec/mathops.h $XC_BUILD_PREFIX/include/libavcodec/
 
-mdkir -p $XC_BUILD_PREFIX/include/libavcodec/x86/
+mkdir -p $XC_BUILD_PREFIX/include/libavcodec/x86/
 cp -f $XC_BUILD_SOURCE/libavcodec/x86/mathops.h $XC_BUILD_PREFIX/include/libavcodec/x86/
-mdkir -p $XC_BUILD_PREFIX/include/libavutil/x86/
+mkdir -p $XC_BUILD_PREFIX/include/libavutil/x86/
 cp -f $XC_BUILD_SOURCE/libavutil/x86/asm.h $XC_BUILD_PREFIX/include/libavutil/x86/