Fix typo in NPMS dump

Fixing print statement to avoid confusion with subscriberId

Test: adb shell dumpsys netpolicy

Bug: 353889237
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f1ba0838646ceb4757f5b3ef9f38e54b8c1e9b81)
Merged-In: Iaee24f08b78fa28c0056aaeea9d655c33793aec8
Change-Id: Iaee24f08b78fa28c0056aaeea9d655c33793aec8
1 file changed