message: docs(devs-infra): link commit and PR for v26.5.6
diff: ### Code Refactoring
  -* refactor(config): show warning message for `sourceMap: false` (#2557)
  +* refactor(config): show warning message for `sourceMap: false` ([#2557](https://github.com/kulshekhar/ts-jest/pull/2557)) ([cf60990](https://github.com/kulshekhar/ts-jest/commit/cf609900e2c5937755123bd08ca2c5f2ff5e0651)).
  