Fix typo when porting to JATS

src/api/mseverity/test

       | while read -r eseq;
         do
             grep -oE '[[:alpha:]][[:digit:]]+' <<<"$eseq" \
-              | while read -0r eid;
+              | while read -r eid;
                 do
                     dec_event "${eid:1}"
                 done \