update update_cache format

Author: Anandkumar Patel

ansible/roles/docker/tasks/main.yml

@@ -38,7 +38,7 @@
   apt_repository:
     repo: "deb https://get.docker.com/ubuntu docker main"
     state: present
-    update_cache=yes
+    update_cache: yes
 
 - name: copy docker config file
   sudo: yes