/etc/devtab: Fix wording in comments.

etc/devtab

@@ -1,15 +1,15 @@
 # /etc/devtab
 #
 # This file contains label conversions for fstab, mount, fsck, hammer,
-# and other command which expect device paths.  It is typically used
-# to translate longer serial numbers (which devs automatically installs
-# as "/dev/serno/<serialnumber>[.ext]" into short-form names to simplify
+# and other commands which expect device paths.  It is typically used
+# to translate longer serial numbers (which devfs automatically installs
+# as "/dev/serno/<serialnumber>[.suffix]" into short-form names to simplify
 # fstab.
 #
 # For use cases a label is represented up to the last '.' (if any),
-# looked up, and then any extension after and including the '.' is
-# tacked onto the result.  So in /etc/fstab the label "serno/fubar.s1a"
-# would translate to "/dev/serno/L123456.s1a" in our example below.
+# looked up, and then any suffix after and including the leading '.' is
+# tacked onto the result.  So in /etc/fstab the label "fubar.s1a"
+# would translate to "/dev/serno/L123456.s1a" in our first example below.
 #
 # Currently the "serno" and "path" types are supported.  Really any generic
 # type is supported and will translate into a subdirectory lookup in /dev.