Adjust tabris.js version in cordova example

This is a quick fix to avoid a breaking change [1] in the
tabris-js-cordova repository that is included in the nightly
tabris.js build.

We need to come up with a versioning strategy for the examples,
however, this should be an independent step.

[1] https://github.com/eclipsesource/tabris-js-cordova/commit/1c1e4f1b47246378434dce43d700c4b996e080cb

Change-Id: Ifaf0ef7cc4c8e979478d32ea83f00b6b380a98f3