Add EOF as a common initialism.
diff --git a/lint.go b/lint.go
index da59b46..ed4fe0f 100644
--- a/lint.go
+++ b/lint.go
@@ -334,6 +334,7 @@
 var commonInitialisms = map[string]bool{
 	"ASCII": true,
 	"API":   true,
+	"EOF":   true,
 	"HTML":  true,
 	"HTTP":  true,
 	"ID":    true,