Correct a file path for media_cas_packager_sdk_files.

Currently getting Kokoro error
ERROR: /var/lib/jenkins/workspace/Media_CAS_Packager_SDK/BUILD:13:1: no such package 'media_cas_packager_sdk/example': BUILD file not found on package path and referenced by '//:media_cas_packager_sdk_files'.
Example: []

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=217577606

BUILD

@@ -14,8 +14,8 @@ pkg_tar(
     name = "media_cas_packager_sdk_files",
     strip_prefix = "/",
     files = [
+        "//example:binary_release_files",
         "//media_cas_packager_sdk/public:binary_release_files",
-        "//media_cas_packager_sdk/example:binary_release_files",
     ],
     mode = "0644",
 )