fix string escape symbols

Author: philipluk

.github/workflows/node_js_containers.yml

@@ -21,8 +21,8 @@ jobs:
       - name: Post a user
         # Send a HTTP POST request to create a user to the mongo DB.
         run: |
-          "curl -X POST http://localhost:3001/api/user -H 'Content-Type: application: application/json' -d '{\"username\": \"hello\", \"address\": \"dwded\"}'"
-          "curl -X POST http://localhost:3001/api/user -H 'Content-Type: application: application/json' -d '{\"username\": \"hello\", \"address\": \"pluk\"}'"
+          'curl -X POST http://localhost:3001/api/user -H ''Content-Type: application: application/json'' -d ''{\"username\": \"hello\", \"address\": \"dwded\"}'''
+          'curl -X POST http://localhost:3001/api/user -H ''Content-Type: application: application/json'' -d ''{\"username\": \"hello\", \"address\": \"pluk\"}'''
       - name: Get Users
         run: curl http://localhost:3001/api/users