Add missing brace in the script

which was omitted during formatting..

Bug: 376852557
Test: ./build.sh -r
Change-Id: I20561ab11f29510eef5a3baefdc655ea927508e0
diff --git a/build/debian/build.sh b/build/debian/build.sh
index df0e750..899e376 100755
--- a/build/debian/build.sh
+++ b/build/debian/build.sh
@@ -133,7 +133,7 @@
 		--target "${arch}-unknown-linux-gnu" \
 		--target-dir "${workdir}/$1" ${release_flag}
 	mkdir -p "${dst}/files/usr/local/bin/$1"
-	cp "${workdir}/$1/${arch}-unknown-linux-gnu/${artifact_mode/$1" "${dst}/files/usr/local/bin/$1/AVF"
+	cp "${workdir}/$1/${arch}-unknown-linux-gnu/${artifact_mode}/$1" "${dst}/files/usr/local/bin/$1/AVF"
 	chmod 777 "${dst}/files/usr/local/bin/$1/AVF"
 
 	mkdir -p "${dst}/files/usr/share/doc/$1"