[scudo] Rename AllocatorRingBuffer into scudo:ring_buffer

To maintain the convention of Scudo names starting with "scudo:",
which is used by some tooling to categorize memory usage.

Reviewed By: Chia-hungDuan

Differential Revision: https://reviews.llvm.org/D157102

GitOrigin-RevId: fdb29f7db56c6fec07fb077abad7cd89e641ef01
1 file changed