doc: fix typo
doc: fix typo

Change-Id: I4042f86e6b129de8b4ec9a3b63756f12bfb7d2cd
Signed-off-by: Alon Bar-Lev <2e3ceb4d37adc6ae3ccc00d3646e0e0a036ace03@redhat.com>

oVirt/ovirt-engine-extension-logger-log4j,oVirt/ovirt-engine-extension-logger-log4j