Fix typo in release workflow (#163)

Author: jdtw

.github/workflows/release.yaml

@@ -25,7 +25,7 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v2
       - name: Build binary
-        run: go build -o certsrap .
+        run: go build -o certstrap .
       - name: Upload artifact
         uses: actions/upload-artifact@v2
         with: