smartctl: fix descriptions and improve examples

pages/common/smartctl.md

@@ -1,23 +1,24 @@
 # smartctl
 
-> View a disk's [SMART](https://en.wikipedia.org/wiki/S.M.A.R.T.) data and other information.
+> View a disk's SMART data and other information.
+> See https://en.wikipedia.org/wiki/S.M.A.R.T for more information.
 
 - View SMART health summary:
 
-`sudo smartctl --health {{/dev/<device>}}`
+`sudo smartctl --health {{/dev/sda}}`
 
 - View device information:
 
-`sudo smartctl --info {{/dev/<device>}}`
+`sudo smartctl --info {{/dev/sda}}`
 
-- Begin a (short) self-test:
+- Begin a short self-test:
 
-`sudo smartctl --test {{short}} {{/dev/<device>}}`
+`sudo smartctl --test short {{/dev/sda}}`
 
 - View current/last self-test status and other SMART capabilities:
 
-`sudo smartctl --capabilities {{/dev/<device>}}`
+`sudo smartctl --capabilities {{/dev/sda}}`
 
 - View SMART self-test log (if supported):
 
-`sudo smartctl --log selftest {{/dev/<device>}}`
+`sudo smartctl --log selftest {{/dev/sda}}`