message: Fix up wording in changelog for azure core
  Addressing
diff: ### Bug Fixes
  - Do not re-use a libcurl connection to same host but different port.
  -- Ensure uniqueness of Uuid on posix platforms.
  +- Ensure uniqueness of `Azure::Core::Uuid` on POSIX platforms.
  ## 1.0.0-beta.8 (2021-04-07)
  