Clean up failover documentation

Change-Id: I4af587e27521d471b34823bc2d21c21e433edd03
Reviewed-on: http://review.couchbase.org/81535
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Tested-by: Michael Wiederhold <mike@couchbase.com>

docs/couchbase-cli-failover.txt

@@ -3,7 +3,7 @@ couchbase-cli-failover(1)
 
 NAME
 ----
-couchbase-cli-failover - Failover a server in the cluster
+couchbase-cli-failover - Failover a node in the cluster
 
 
 SYNOPSIS
@@ -16,22 +16,20 @@ SYNOPSIS
 DESCRIPTION
 -----------
 
-This command fails over one or more servers. Servers can be either hard failed
+This command fails over one or more nodes. Nodes can be either hard failed
 over or gracefully failed over. A hard failover means that the failover happens
-immediately, but risk potential data loss. Graceful failover ensures that
-replication is up to date before the server is failed over so that there is no
-data loss, but the failover is not immediate. Using the --force flag means that
-the failover should be a hard failover. If the --force flag is not specified
-then the failover will be graceful. Note that if a server is already down you
-must hard fail it over.
+immediately, but risks potential data loss. Graceful failover ensures that
+replication is up to date before the node is failed over so that there is no
+data loss, but the failover is not immediate. Note that if a node is already down
+you must perform a hard failover.
 
 OPTIONS
 -------
 
 include::part-common-options.txt[]
 
 --server-failover <server_list>::
-	A comma separated list of servers to failover.
+	A comma separated list of nodes to failover.
 
 --force::
 	Specifying this flag signifies that the nodes to be failed over should be
@@ -43,7 +41,7 @@ include::part-common-options.txt[]
 
 --no-progress-bar::
 	Disables showing the progress bar which tracks the progress of the
-	rebalance. Note that a rebalance only occurs for graceful failovers (eg.
+	rebalance. Note that a rebalance only occurs for graceful failovers (e.g.
 	non-forced failovers). The failover command will still wait for rebalance
 	completion even if this flag is specified, but the progress bar will not
 	be shown.
@@ -58,12 +56,12 @@ include::part-host-formats.txt[]
 EXAMPLES
 --------
 
-To hard fail over a server run the following command:
+To hard fail over a node run the following command:
 
 	$ couchbase-cli failover -c 192.168.1.5:8091 --username Administrator \
 	 --password password --server-failover 192.168.1.6:8091 --force
 
-To gracefully failover a server run the following command:
+To gracefully failover a node run the following command:
 
 	$ couchbase-cli failover -c 192.168.1.5:8091 --username Administrator \
 	 --password password --server-failover 192.168.1.6:8091