[CI] typo

.gitlab-ci.yml

@@ -144,7 +144,7 @@ deploy_daily:
     - dpkg -x ${PKG_NAME} .
     - DEB_PREFIX="mantid_ill_"
     - rm ${DEB_PREFIX}5.deb
-    - for i in {4..0}; do mv ${DEB_PREFIX}$i.deb ${DEB_PREFIX}$(($i+1)).deb"; done
+    - for i in {4..0}; do mv ${DEB_PREFIX}$i.deb ${DEB_PREFIX}$(($i+1)).deb; done
     - mv ${PKG_NAME} ${DEB_PREFIX}0.deb
 
 deploy_nightly: