incorrect linux-arm64 name

Author: dromer

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
   linux:
     strategy:
       matrix:
-        target: [linux-linux-arm64, linux-armhf, linux-i686, linux-riscv64, linux-x86_64]
+        target: [linux-arm64, linux-armhf, linux-i686, linux-riscv64, linux-x86_64]
     runs-on: ubuntu-latest
     container:
       image: ubuntu:20.04