ALSA: Documentation/sound/alsa/ALSA-Configuration.txt: fix typo

As noted by Gu Rui in http://bugzilla.kernel.org/show_bug.cgi?id=11444,
there is a typo in Documentation/sound/alsa/ALSA-Configuration.txt.
After checking the source (sound/pci/hda/hda_intel.c), the report
looks correct to me.
Signed-off-by: NMichael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>

Documentation/sound/alsa/ALSA-Configuration.txt

@@ -1098,7 +1098,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	    register value without FIFO size correction as the current
 	    DMA pointer.  position_fix=2 will make the driver to use
 	    the position buffer instead of reading SD_LPIB register.
-	    (Usually SD_LPLIB register is more accurate than the
+	    (Usually SD_LPIB register is more accurate than the
 	    position buffer.)
 
     NB: If you get many "azx_get_response timeout" messages at