(CI) update styling

Author: MatthijsBurgh

.ci/script.bash

@@ -7,17 +7,17 @@ set -o errexit
 # Standard argument parsing, example: install-package --branch=master --package=ros_robot
 for i in "$@"
 do
-    case $i in
+    case ${i} in
         * )
             # unknown option
-            if [[ -n "$i" ]]
+            if [[ -n "${i}" ]]
             then
-                echo -e "\e[35m\e[1mUnknown input argument '$i'. Check CI yaml file\e[0m"
+                echo -e "\e[35m\e[1mUnknown input argument '${i}'. Check CI yaml file\e[0m"
                 exit 1
             fi ;;
     esac
     shift
 done
 
-echo -e "\e[35m\e[1m tue-make-documentation --no-status\e[0m"
+echo -e "\e[35m\e[1mtue-make-documentation --no-status\e[0m"
 docker exec -t tue-env bash -c 'source ~/.bashrc; tue-make-documentation --no-status'