Dockerfile: correct typo in comments

bin/start_eris_db

@@ -56,7 +56,7 @@ echo "env ERIS_DB_DATADIR is set to $ERIS_DB_DATADIR"
 #-----------------------------------------------------------------------
 # [2016-07-13 ben] we preserve the existing contact commands "new", "run",
 # but this functionality is absorbed in eris-db, eris-cm, eris-cli
-# and the is here to catch deployed use-cases.
+# and the mapping is preserved here to catch deployed use-cases.
 # NOTE: eris-db serve picks up following environment variables which are relevant to interaction with eris-cli
 #  - CHAIN_ID, set by eris-cli
 #  - ERIS_DB_WORKDIR, set in this script