fix ovsx publish command

Author: carole-lavillonniere

Makefile

@@ -32,4 +32,4 @@ publish-ovsx:
 	@echo "Publishing VS Code extension to Open VSX..."
 	@echo "Verifying PAT..."
 	npx ovsx verify-pat localstack -p $(OVSX_PAT)
-	npx ovsx publish --pre-release $(VERSION) -p $(OVSX_PAT)
+	npx ovsx publish --pre-release --packageVersion $(VERSION) -p $(OVSX_PAT)