docs: fix typos

* docs/drvopenvz.html.in: Spell administrator correctly.
* docs/drvuml.html.in: Likewise.
* src/qemu/qemu.conf: Likewise.  Fix other typos, too.

docs/drvopenvz.html.in

@@ -55,7 +55,7 @@ openvz+ssh://root@example.com/system (remote access, SSH tunnelled)
     OpenVZ releases later than 3.0.23 ship with a standard network device
     setup script that is able to setup bridging, named
     <code>/usr/sbin/vznetaddbr</code>. For releases prior to 3.0.23, this
-    script must be created manually by the host OS adminstrator. The
+    script must be created manually by the host OS administrator. The
     simplest way is to just download the latest version of this script
     from a newer OpenVZ release, or upstream source repository. Then
     a generic configuration file <code>/etc/vz/vznetctl.conf</code>

docs/drvuml.html.in

@@ -7,7 +7,7 @@
     guests built for User Mode Linux. UML requires no special support in
     the host kernel, so can be used by any user of any linux system, provided
     they have enough free RAM for their guest's needs, though there are
-    certain restrictions on network connectivity unless the adminstrator
+    certain restrictions on network connectivity unless the administrator
     has pre-created TAP devices.
     </p>
 

src/qemu/qemu.conf

@@ -47,7 +47,7 @@
 
 # The default TLS configuration only uses certificates for the server
 # allowing the client to verify the server's identity and establish
-# and encrypted channel.
+# an encrypted channel.
 #
 # It is possible to use x509 certificates for authentication too, by
 # issuing a x509 certificate to every client who needs to connect.
@@ -62,9 +62,9 @@
 # VNC passwords. This parameter is only used if the per-domain
 # XML config does not already provide a password. To allow
 # access without passwords, leave this commented out. An empty
-# string will still enable passwords, but be rejected by QEMU
+# string will still enable passwords, but be rejected by QEMU,
 # effectively preventing any use of VNC. Obviously change this
-# example here before you set this
+# example here before you set this.
 #
 # vnc_password = "XYZ12345"
 
@@ -115,7 +115,7 @@
 #  server-cert.pem - the server certificate signed with ca-cert.pem
 #  server-key.pem  - the server private key
 #
-# This option allows the certificate directory to be changed
+# This option allows the certificate directory to be changed.
 #
 # spice_tls_x509_cert_dir = "/etc/pki/libvirt-spice"
 
@@ -124,8 +124,8 @@
 # per-domain XML config does not already provide a password. To
 # allow access without passwords, leave this commented out. An
 # empty string will still enable passwords, but be rejected by
-# QEMU effectively preventing any use of SPICE. Obviously change
-# this example here before you set this
+# QEMU, effectively preventing any use of SPICE. Obviously change
+# this example here before you set this.
 #
 # spice_password = "XYZ12345"
 
@@ -134,15 +134,15 @@
 # on the host, then the security driver will automatically disable
 # itself. If you wish to disable QEMU SELinux security driver while
 # leaving SELinux enabled for the host in general, then set this
-# to 'none' instead
+# to 'none' instead.
 #
 # security_driver = "selinux"
 
 
-# The user ID for QEMU processes run by the system instance
+# The user ID for QEMU processes run by the system instance.
 #user = "root"
 
-# The group ID for QEMU processes run by the system instance
+# The group ID for QEMU processes run by the system instance.
 #group = "root"
 
 # Whether libvirt should dynamically change file ownership
@@ -155,14 +155,15 @@
 #
 #  - 'cpu' - use for schedular tunables
 #  - 'devices' - use for device whitelisting
+#  - 'memory' - use for memory tunables
 #
 # NB, even if configured here, they won't be used unless
-# the adminsitrator has mounted cgroups. eg
+# the administrator has mounted cgroups, e.g.:
 #
 #  mkdir /dev/cgroup
 #  mount -t cgroup -o devices,cpu,memory none /dev/cgroup
 #
-# They can be mounted anywhere, and different controlers
+# They can be mounted anywhere, and different controllers
 # can be mounted in different locations. libvirt will detect
 # where they are located.
 #
@@ -175,7 +176,7 @@
 # all sound device, and all PTY devices are allowed.
 #
 # This will only need setting if newer QEMU suddenly
-# wants some device we don't already know a bout.
+# wants some device we don't already know about.
 #
 #cgroup_device_acl = [
 #    "/dev/null", "/dev/full", "/dev/zero",