Fix: File must end with a newline

Author: chorman0773

src/attributes/codegen.md

@@ -545,4 +545,4 @@ Using the `instruction_set` attribute has the following effects:
 [_MetaWord_]: ../attributes.md#meta-item-attribute-syntax
 [_MetaListIdents_]: ../attributes.md#meta-item-attribute-syntax
 [_MetaListPath_]: ../attributes.md#meta-item-attribute-syntax
-[_MetaListNameValueStr_]: ../attributes.md#meta-item-attribute-syntax
+[_MetaListNameValueStr_]: ../attributes.md#meta-item-attribute-syntax