smartctl.8.in: proposed change to TapeAlert handling. No code has changed,...

smartctl.8.in: proposed change to TapeAlert handling. No code has changed, just the smartctl manpage

git-svn-id: https://svn.code.sf.net/p/smartmontools/code/trunk@5321 4ea69e1a-61f1-4043-bf83-b5c94c648137