message: correct description of `current_time()` intrinisic
diff: @@ -72,14 +72,9 @@ extern "C" {
  /**
  - * Returns the time in seconds from 1970 of the last accepted block (not the block including this action)
  - * @brief Get time of the last accepted block
  - * @return time in seconds from 1970 of the last accepted block
  - * Example:
  -*
  - * @code
  - * time current_time = now();
  - * @endcode
  + * Returns the time in microseconds from 1970 of the current block
  + * @brief Get time of the current block (i.e. the block including this action)
  + * @return time in microseconds from 1970 of the current block
  */
  uint64_t current_time();
  