Update ci-test.sh (#85)

This PR updates `ci-test.sh` which is used by MMTk core to test the
binding. We have done the change for the CI script for the `mmtk-julia`
repo in #79, but I forgot to
update `ci-test.sh`.

.github/scripts/ci-test.sh

@@ -8,7 +8,7 @@ cur=$(realpath $(dirname "$0"))
 
 # Build release
 cd $cur
-./ci-build.sh release immix
+./ci-build.sh release Immix
 
 # Use release build to run tests
 cd $cur