fix typo.

.gitlab-ci.yml

@@ -21,7 +21,7 @@ before_script:
   - cd resultsanalysis
   - pip install .
   - cd ../
-  - if [[ i! -d 'phasexmlcreator' ]]; then rm -r phasexmlcreator; fi
+  - if [[ -d 'phasexmlcreator' ]]; then rm -r phasexmlcreator; fi
   - git clone https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.developers.cam.ac.uk/ch/hunter/ssiptools/ssimpleapps/phasexmlcreator.git
   - cd phasexmlcreator
   - pip install .