Fix go version string

Signed-off-by: Dongri Jin <[email protected]>

Author: dongrie

.github/workflows/minitoken-besu-ethereum.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Set up Go 1.20
         uses: actions/setup-go@v3
         with:
-          go-version: 1.20
+          go-version: "1.20"
       - name: Use Node.js 18
         uses: actions/setup-node@v3
         with: