fix runner name (#14)

Signed-off-by: usamoi <usamoi@outlook.com>

Author: usamoi

.github/workflows/release_vchord.yml

@@ -21,7 +21,7 @@ jobs:
 
   docker:
     needs: ["versions"]
-    runs-on: ${{ matrix.platform == 'amd64' && 'ubuntu-22.04' || 'ubuntu-22.04-arm64' }}
+    runs-on: ${{ matrix.platform == 'amd64' && 'ubuntu-22.04' || 'ubuntu-22.04-arm' }}
     strategy:
       matrix:
         pg_major: ["14", "15", "16", "17"]