Replace Qemu by QEMU in user visible documentation

The official spelling is QEMU.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/fsdev/virtfs-proxy-helper.texi b/fsdev/virtfs-proxy-helper.texi
index faa0434..e60e3b9 100644
--- a/fsdev/virtfs-proxy-helper.texi
+++ b/fsdev/virtfs-proxy-helper.texi
@@ -24,7 +24,7 @@
 Proxy helper(a stand alone binary part of qemu) is invoked with
 root privileges. Proxy helper chroots into 9p export path and creates
 a socket pair or a named socket based on the command line parameter.
-Qemu and proxy helper communicate using this socket. QEMU proxy fs
+QEMU and proxy helper communicate using this socket. QEMU proxy fs
 driver sends filesystem request to proxy helper and receives the
 response from it.