feat(multi_object_tracker): fix typo in param name and change default value (#785)

* fix(multi_object_tracker): fix typo in param name

Signed-off-by: kminoda <koji.minoda@tier4.jp>

* feat: update default param

Signed-off-by: kminoda <koji.minoda@tier4.jp>

---------

Signed-off-by: kminoda <koji.minoda@tier4.jp>

Author: kminoda

autoware_launch/config/perception/object_recognition/tracking/multi_object_tracker/multi_object_tracker_node.param.yaml

@@ -17,7 +17,7 @@
     publish_untracked_objects: false
 
     # debug parameters
-    publish_processing_time: false
+    publish_processing_time: true
     publish_tentative_objects: false
-    diagnostic_warn_delay: 0.5      # [sec]
-    diagnostic_error_delay: 1.0     # [sec]
+    diagnostics_warn_delay: 0.5      # [sec]
+    diagnostics_error_delay: 1.0     # [sec]