Add the fact that CHECK_OK exits the program to the comment of CHECK_OK.

PiperOrigin-RevId: 474916555
Change-Id: Ie6fc9186006280e4db3730ea67c2d99b6faff121

absl/log/check.h

diff --git a/absl/log/check.h b/absl/log/check.h
index 30bf76a..c7303b8 100644
--- a/absl/log/check.h
+++ b/absl/log/check.h
@@ -163,7 +163,7 @@
 
 // `CHECK_OK` and friends validate that the provided `absl::Status` or
 // `absl::StatusOr<T>` is OK.  If it isn't, they print a failure message that
-// includes the actual status.
+// includes the actual status and terminate the program.
 //
 // As with all `DCHECK` variants, `DCHECK_OK` has no effect (not even
 // evaluating its argument) if `NDEBUG` is enabled.