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.
 
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 83b2ad5..d18dff0 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -968,7 +968,7 @@
 
 QEMU emulates a PCI UHCI USB controller. You can virtually plug
 virtual USB devices or real host USB devices (experimental, works only
-on Linux hosts).  Qemu will automatically create and connect virtual USB hubs
+on Linux hosts).  QEMU will automatically create and connect virtual USB hubs
 as necessary to connect multiple USB devices.
 
 @menu
diff --git a/qemu-nbd.texi b/qemu-nbd.texi
index 44996cc..6955d90 100644
--- a/qemu-nbd.texi
+++ b/qemu-nbd.texi
@@ -6,7 +6,7 @@
 
 @c man begin DESCRIPTION
 
-Export Qemu disk image using NBD protocol.
+Export QEMU disk image using NBD protocol.
 
 @c man end
 
diff --git a/qemu-options.hx b/qemu-options.hx
index f72f9a0..a169792 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1310,7 +1310,7 @@
 Optionally, for PCI cards, you can specify the number @var{v} of MSI-X vectors
 that the card should have; this option currently only affects virtio cards; set
 @var{v} = 0 to disable MSI-X. If no @option{-net} option is specified, a single
-NIC is created.  Qemu can emulate several different models of network card.
+NIC is created.  QEMU can emulate several different models of network card.
 Valid values for @var{type} are
 @code{virtio}, @code{i82551}, @code{i82557b}, @code{i82559er},
 @code{ne2k_pci}, @code{ne2k_isa}, @code{pcnet}, @code{rtl8139},
@@ -2133,7 +2133,7 @@
 use the following options to step up a netcat redirector to allow
 telnet on port 5555 to access the qemu port.
 @table @code
-@item Qemu Options:
+@item QEMU Options:
 -serial udp::4555@@:4556
 @item netcat options:
 -u -P 4555 -L 0.0.0.0:4556 -t -p 5555 -I -T