configstore: make consistent with AOSP

'rd' -> 'RD' to avoid having a different hash/merge conflicts.

Bug: N/A
Test: hidl-gen -Lcheck android.hardware.configstore@1.0
Test: manually check the hash is the same on AOSP
Change-Id: Id57f21d25bc905859c43f229b9d5b66c0c9d2cfc