Fix typo in devstack-with-nested-kvm.rst

'succesfully' has been fixed to 'successfully'.

Change-Id: Ib14b1b8cb612aba759f3fe8b94d35cf47eb9b339
Closes-Bug: #1430149
diff --git a/doc/source/guides/devstack-with-nested-kvm.rst b/doc/source/guides/devstack-with-nested-kvm.rst
index 58ec3d3..610300b 100644
--- a/doc/source/guides/devstack-with-nested-kvm.rst
+++ b/doc/source/guides/devstack-with-nested-kvm.rst
@@ -129,7 +129,7 @@
     LIBVIRT_TYPE=kvm
 
 
-Once DevStack is configured succesfully, verify if the Nova instances
+Once DevStack is configured successfully, verify if the Nova instances
 are using KVM by noticing the QEMU CLI invoked by Nova is using the
 parameter `accel=kvm`, e.g.: