Fix typo: ODO -> TODO on the org reference card

doc/orgcard.tex

@@ -607,7 +607,7 @@ after  ``{\tt :}'', and dictionary words elsewhere.
 \key{compile agenda for the current week}{C-c a a$^1$}
 \key{compile global TODO list}{C-c a t$^1$}
 \key{compile TODO list for specific keyword}{C-c a T$^1$}
-\key{match tags, ODO kwds, properties}{C-c a m$^1$}
+\key{match tags, TODO kwds, properties}{C-c a m$^1$}
 \key{match only in TODO entries}{C-c a M$^1$}
 \key{find stuck projects}{C-c a \#$^1$}
 \key{show timeline of current org file}{C-c a L$^1$}