correct test function descriptions (#2970) (#2993)

(cherry picked from commit 354413c)

Signed-off-by: Yuchen Liu <lyuchen9696@gmail.com>
Co-authored-by: Yuchen966 <70603129+Yuchen966@users.noreply.github.com>

Author: mergify[bot]

rclcpp/test/rclcpp/test_intra_process_manager.cpp

@@ -517,7 +517,7 @@ TEST(TestIntraProcessManager, add_pub_sub) {
  * - Remove the first subscription from ipm and add a new one.
  * - Publishes a unique_ptr message with a subscription not requesting ownership.
  * - The received message is expected to be the same, the first subscription do not receive it.
- * - Publishes a shared_ptr message with a subscription not requesting ownership.
+ * - Publishes a unique_ptr message with a subscription not requesting ownership.
  * - The received message is expected to be the same.
  */
 TEST(TestIntraProcessManager, single_subscription) {
@@ -569,9 +569,9 @@ TEST(TestIntraProcessManager, single_subscription) {
  * - One is expected to receive the published message, while the other will receive a copy.
  * - Publishes a unique_ptr message with 2 subscriptions not requesting ownership.
  * - Both received messages are expected to be the same as the published one.
- * - Publishes a shared_ptr message with 2 subscriptions requesting ownership.
+ * - Publishes a unique_ptr message with 2 subscriptions requesting ownership.
  * - Both received messages are expected to be a copy of the published one.
- * - Publishes a shared_ptr message with 2 subscriptions not requesting ownership.
+ * - Publishes a unique_ptr message with 2 subscriptions not requesting ownership.
  * - Both received messages are expected to be the same as the published one.
  */
 TEST(TestIntraProcessManager, multiple_subscriptions_same_type) {
@@ -676,9 +676,9 @@ TEST(TestIntraProcessManager, multiple_subscriptions_same_type) {
  * - The 2 subscriptions not requesting ownership are expected to both receive the same copy
  *   of the message, one of the subscription requesting ownership is expected to receive a
  *   different copy, while the last is expected to receive the published message.
- * - Publishes a shared_ptr message with 1 subscription requesting ownership and 1 not.
- * - The subscription requesting ownership is expected to receive a copy of the message, while
- *   the other is expected to receive the published message
+ * - Publishes a unique_ptr message with 1 subscription requesting ownership and 1 not.
+ * - The subscription requesting ownership is expected to receive the published message, while
+ *   the other is expected to receive a copy of the message
  */
 TEST(TestIntraProcessManager, multiple_subscriptions_different_type) {
   using IntraProcessManagerT = rclcpp::experimental::IntraProcessManager;