Fix wrong content type name in smssync tests. Fixes T1125

Summary:  - Change the right content type name

Test Plan:
 - ./bin/tests install
 - ./bin/tests run --no-install

Reviewers: rjmackay, shadowhand

Reviewed By: shadowhand

Subscribers: srutto

Maniphest Tasks: T1125

Differential Revision: https://phabricator.ushahidi.com/D521