Merge pull request #384 from alejovicu/upd-docu

Update libvirt how to doc

docs/dev/libvirt-howto.md

@@ -184,7 +184,7 @@ EOF
 ## Build and run the installer
 
 With [libvirt configured](#install-and-enable-libvirt), you can proceed with [the usual quick-start](../../README.md#quick-start).
-To avoid being prompted repeatedly, you can set [environment variables](../user/environent-variables.md) to reflect your libvirt choices.  For example, selecting libvirt, setting [our earlier name choices](#pick-names), [our pull secret](#get-a-pull-secret), and telling both the installer and the machine-API operator to contact `libvirtd` at [the usual libvirt IP](#firewall), you can use:
+To avoid being prompted repeatedly, you can set [environment variables](../user/environment-variables.md) to reflect your libvirt choices.  For example, selecting libvirt, setting [our earlier name choices](#pick-names), [our pull secret](#get-a-pull-secret), and telling both the installer and the machine-API operator to contact `libvirtd` at [the usual libvirt IP](#firewall), you can use:
 
 ```sh
 export OPENSHIFT_INSTALL_PLATFORM=libvirt