update duo faq for sms with scp from rt 88575

Pete Meyer commited 2021-10-07 17:12:51 -0400 commit 65b7843710ce54ffb640530caf8208db674ae156

				duo-ssh-faq.md
			
          @@ -91,3 +91,5 @@ NOTE:

           These commands are non-interactive, so there is not analogous menu for push/call/sms - if the `DUO_PASSCODE` environmental method isn't set, this will use your default method.

          +If you are using `sms` as `DUO_PASSCODE`, use the initial push to recieve passcodes, and then set `DUO_PASSCODE` to the value of the next passcode.

          +

...	...	@@ -91,3 +91,5 @@ NOTE:
91	91
92	92	These commands are non-interactive, so there is not analogous menu for push/call/sms - if the `DUO_PASSCODE` environmental method isn't set, this will use your default method.
93	93
	94	+If you are using `sms` as `DUO_PASSCODE`, use the initial push to recieve passcodes, and then set `DUO_PASSCODE` to the value of the next passcode.
	95	+