message: telemtry: fix comment according to review
diff: @@ -401,7 +401,7 @@ public:
  /**
  * @brief Returns true if the overall health is ok (synchronous).
  *
  - * @return true if all individual health flags are true.
  + * @return True if all health flags are OK.
  */
  bool health_all_ok() const;
  