Fix build error

Author: Michael Burke

machine_configuration/mco-update-boot-skew-mgmt.adoc

@@ -1,5 +1,5 @@
 :_mod-docs-content-type: ASSEMBLY
-:context: machine-configs-configure
+:context: mco-update-boot-skew-mgmt
 include::_attributes/common-attributes.adoc[]
 [id="mco-update-boot-skew-mgmt"]
 = Boot image skew enforcement