Minor typo in ReplicationSource SocketTimeoutException error handling

The user gets an error message on socket timeout exception:

The words "the" and "call" need a space between them. Fix is trivial.

2012-10-11 11:09:06,154 DEBUG org.apache.hadoop.hbase.replication.regionserver.ReplicationSource: Encountered a SocketTimeoutException. Since thecall to the remote cluster timed out, which is usually caused by a machine failure or a massive slowdown, sleeping 1000 times 100

The error is present in .92 and onward all the way through to the trunk. Fix should go into all those branches.