Bug 1687640 - Cover mach.ps1 in moz.build r=dmajor,firefox-build-system-reviewers

Differential Revision: https://phabricator.services.mozilla.com/D102411

moz.build

@@ -29,7 +29,7 @@ with Files("docs/**"):
     BUG_COMPONENT = ("Firefox Build System", "Generated Documentation")
     SCHEDULES.exclusive = ["docs"]
 
-with Files("mach"):
+with Files("mach*"):
     BUG_COMPONENT = ("Firefox Build System", "Mach Core")
 
 with Files("*moz*"):