fix(ci): Fix supermarket share command typo

Signed-off-by: Dan Webb <dan.webb@damacus.io>

Author: damacus

.github/workflows/release.yml

@@ -78,4 +78,4 @@ jobs:
           knife supermarket share haproxy \
             --supermarket-site https://supermarket.chef.io \
             --key ~/.chef/supermarket.pem \
-            --user-name ${{ secrets.CHEF_SUPERMARKET_USER }}
+            --user ${{ secrets.CHEF_SUPERMARKET_USER }}