Docs - remove double "won't" from elastic_computing.shtml

Bug 8254

doc/html/elastic_computing.shtml

@@ -56,7 +56,7 @@ be placed in a DOWN state and the job requesting the node will be requeued.
 If the node isn't actually rebooted (i.e. when multiple-slurmd is configured)
 starting slurmd with "-b" option might be useful.
 <dt><b>SlurmctldParameters=cloud_dns</b>
-<dd>By default, Slurm expects that the network addresses for cloud nodes won't
+<dd>By default, Slurm expects that the network addresses for cloud nodes
 won't be known until creation of the node and that Slurm will be notified of
 the node's address (e.g. scontrol update nodename=&lt;name&gt;
 nodeaddr=&lt;addr&gt;). Since Slurm communications rely on the node