Fix incorrect libcnary path

Signed-off-by: Joseph Mattello <mail@joemattiello.com>

Author: JoeMatt

Package.swift

@@ -70,7 +70,7 @@ let package = Package(
                 "lookup2.c",
                 "libplist/src",
                 "libplist/libcnary",
-                "libplist/libcnary/src",
+//                "libplist/libcnary/src",
             ],
             publicHeadersPath: "",
             cSettings: [