add task for readlink.c

Author: Vladimir Kotal

file-api.tex

@@ -950,7 +950,7 @@
 the symlink's target.
 \item \emph{\texttt{bufsize}} is typically set as 1 byte less than the buffer
 size to accommodate the terminating \texttt{NULL} character.
-\item See \example{readlink/readlink.c}
+\item See \example{readlink/readlink.c} and fix the problem therein.
 \end{itemize}
 
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