Fix typo

The correct name of the sound card is Ensoniq ES1370, not IS1370. The
es1370 kernel driver supports the Ensoniq ES1370 AudioPCI sound card.

Close #336

Author: jserv

lkmpg.tex

@@ -843,7 +843,7 @@ \subsection{Device Drivers}
 On Unix, each piece of hardware is represented by a file located in \verb|/dev| named a device file which provides the means to communicate with the hardware.
 The device driver provides the communication on behalf of a user program.
 % FIXME: use popular device for example
-So the es1370.ko sound card device driver might connect the \verb|/dev/sound| device file to the Ensoniq IS1370 sound card.
+So the es1370.ko sound card device driver might connect the \verb|/dev/sound| device file to the Ensoniq ES1370 sound card.
 A userspace program like mp3blaster can use \verb|/dev/sound| without ever knowing what kind of sound card is installed.
 
 Let's look at some device files.