Update arch in misc/setup for ioq3 changing from i386 to x86

misc/setup/ioquake3.SlackBuild

@@ -24,9 +24,9 @@ PKG_VERSION=$VERSION
 ARCH=${ARCH:-i586}
 
 if [ "$ARCH" = "i?86" ]; then
-  ARCHSUFFIX="i386"
+  ARCHSUFFIX="x86"
 elif [ "$ARCH" = "x86_64" ]; then
-  ARCHSUFFIX="64"
+  ARCHSUFFIX="x86_64"
 fi
 
 BUILD=${BUILD:-1_io}