qemu-ga: Remove stray 'q' in documentation

Signed-off-by: NStefan Weil <sw@weilnetz.de>
Reviewed-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

qemu-ga.texi

@@ -30,7 +30,7 @@ set user's password
 @end itemize
 
 qemu-ga will read a system configuration file on startup (located at
-q@file{/etc/qemu/qemu-ga.conf} by default), then parse remaining
+@file{/etc/qemu/qemu-ga.conf} by default), then parse remaining
 configuration options on the command line. For the same key, the last
 option wins, but the lists accumulate (see below for configuration
 file format).