fixed typo in interface.js (#36049)

Summary:
fixed a typo in interface.js

## Changelog

[GENERAL] [FIXED] - Fixed a typo in interface.js

Pull Request resolved: #36049

Test Plan: simple typo fix - no testing required

Reviewed By: cortinico

Differential Revision: D42996797

Pulled By: cipolleschi

fbshipit-source-id: 8a5a5f28174f874c530549743019c281732d2da4

interface.js

@@ -11,7 +11,7 @@
 'use strict';
 
 // NOTE: Hmm... I don't think declaring variables within this module actually
-// accomplishes anything besides documenting that these globals are exepcted to
+// accomplishes anything besides documenting that these globals are expected to
 // exist. So I think the correct "fix" to this lint warning is to delete this
 // entire file. But in lieu of doing that... no harm for now in keeping this
 // file around, even if it is only for documentation purposes. ¯\_(ツ)_/¯