To be on the safe side when detecting 64bit arm #72

src/freedombone-image-customise

     if [[ $ARCHITECTURE == *"arm"* ]]; then
         GOARCH=armv6l
     fi
-    if [[ $ARCHITECTURE == *"aarch"* ]]; then
+    if [[ $ARCHITECTURE == *"aarch"* || $ARCHITECTURE == *"arm64"* ]]; then
         GOARCH=arm64
     fi
     if [ ! $GOARCH ]; then

src/freedombone-utils-go

     if [[ $ARCHITECTURE == *"arm"* ]]; then
         GOARCH=armv6l
     fi
-    if [[ $ARCHITECTURE == *"aarch"* ]]; then
+    if [[ $ARCHITECTURE == *"aarch"* || $ARCHITECTURE == *"arm64"* ]]; then
         GOARCH=arm64
     fi
     if [ ! $GOARCH ]; then
             GOARCH=armv6l
             echo $"Using $GOARCH"
         fi
-        if [[ $ARCHITECTURE == *"aarch"* ]]; then
+        if [[ $ARCHITECTURE == *"aarch"* || $ARCHITECTURE == *"arm64"* ]]; then
             GOARCH=arm64
             echo $"Using $GOARCH"
         fi