update docs to note that cluster mode is not necessary to exploit

Author: Brent Cook

documentation/modules/auxiliary/dos/cisco/ios_telnet_rocem.md

@@ -1,7 +1,7 @@
 ## Vulnerable Application
 
-  1. Obtain or target two paired Cisco Catalyst switches of any model indicated here: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170317-cmp.
-  2. They will need to be configured in cluster mode. Additional information on setup is available from the module author's site here: https://artkond.com/2017/04/10/cisco-catalyst-remote-code-execution/
+  1. Obtain a Cisco switch of any model indicated here that is running vulnerable firmware: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170317-cmp. Note that the vulnerability spans many years. We tested two firmwares 10 years apart and were able to verify exploitability.
+  2. Enable telnet access and verify that you can reach the swith normally via that mode.
 
 ## Verification Steps