Fixed typo in build script

Change-Id: Ia0fbbc16d4e45c1070c7ee09cb4c8721fc57df3d

Author: jacek-marchwicki

.gitlab-ci.yml

@@ -15,8 +15,8 @@ build-app:
 build-server:
   image: python:2.7.10
   script:
-    - cd webscokets-server
     - pip install virtualenv==13.1.2
+    - cd websockets-server
     - virtualenv --no-site-packages venv
     - source venv/bin/activate
     - cd server