Correcting mogno -> mongo typo

Author: alexjs

source/tutorial/deploy-replica-set.txt

@@ -58,9 +58,9 @@ Issue the following command to create the necessary data directories:
 
 Issue the following commands, each in a distinct screen window: ::
 
-     mognod --port 27017 --dbpath /srv/mongodb/rs0-0 --replSet rs0
-     mognod --port 27018 --dbpath /srv/mongodb/rs0-1 --replSet rs0
-     mognod --port 27019 --dbpath /srv/mongodb/rs2-2 --replSet rs0
+     mongod --port 27017 --dbpath /srv/mongodb/rs0-0 --replSet rs0
+     mongod --port 27018 --dbpath /srv/mongodb/rs0-1 --replSet rs0
+     mongod --port 27019 --dbpath /srv/mongodb/rs2-2 --replSet rs0
 
 These command start members of a replica set named ``rs0``, each
 running on a distinct port. Alternatively, if you are already using these