fix wording

Author: vladak

file-api.tex

@@ -778,7 +778,7 @@
 more critical than updating the file access time (which is rarely ever
 important).  It may also come in handy if your filesystem is on a medium with a
 limited number of erase/write cycles -- a CompactFlash, for example.  If your
-system supports it, it will be a \texttt{noatime} option for the \texttt{mount}
+system supports it, it will be the \texttt{noatime} option for the \texttt{mount}
 command.  See the manual page. Some systems (Linux based) support a non-portable
 \texttt{open} syscall flag to set this per file opening, based on some
 conditions.