Fix the help message for run_ssh

Change-Id: I3101f68386420479172d51bca5ee658099f9a323
diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index 1080ddf..02ad1d5 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -256,7 +256,7 @@
 # (integer value)
 #build_timeout=300
 
-# Does the test environment support snapshots? (boolean value)
+# Should the tests ssh to instances? (boolean value)
 #run_ssh=false
 
 # User name used to authenticate to an instance. (string