Add VM as a common initialism.
diff --git a/lint.go b/lint.go
index e256adf..ca24383 100644
--- a/lint.go
+++ b/lint.go
@@ -462,6 +462,7 @@
 	"UID":   true,
 	"URL":   true,
 	"UTF8":  true,
+	"VM":    true,
 	"XML":   true,
 }