fix a typo

.gitlab-ci.yml

@@ -80,7 +80,7 @@ common:setup:
       if [ -n "${RM}" ] ; then rm -rf $RM ; fi
       for file in $(find /scratch/snakemake-cache -type f); do
         if file -b "$file" | grep -E '^ROOT file' >/dev/null; then
-          ln -sf "$file" target.roo
+          ln -sf "$file" target.root
           rootls target.root && echo "$file is not broken" || echo "$file is broken" 
         fi
       done