[3.0.2-prepare][cherry-pick] Fix python class description error (#12790)

Co-authored-by: chenrj <102030622+xdu-chenrj@users.noreply.github.com>

dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/DateUtils.java

@@ -329,8 +329,8 @@ public final class DateUtils {
     /**
      * format time to duration
      *
-     * @param d1 d1
-     * @param d2 d2
+     * @param start start
+     * @param end end
      * @return format time
      */
     public static String format2Duration(Date start, Date end) {

dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/tasks/python.py

@@ -33,22 +33,22 @@ log = logging.getLogger(__file__)
 class Python(Task):
     """Task Python object, declare behavior for Python task to dolphinscheduler.
 
-    Python task support two types of parameters for :param:``code``, and here is an example:
+    Python task support two types of parameters for :param:``definition``, and here is an example:
 
-    Using str type of :param:``code``
+    Using str type of :param:``definition``
 
     .. code-block:: python
 
-        python_task = Python(name="str_type", code="print('Hello Python task.')")
+        python_task = Python(name="str_type", definition="print('Hello Python task.')")
 
-    Or using Python callable type of :param:``code``
+    Or using Python callable type of :param:``definition``
 
     .. code-block:: python
 
         def foo():
             print("Hello Python task.")
 
-        python_task = Python(name="str_type", code=foo)
+        python_task = Python(name="str_type", definition=foo)
 
     :param name: The name for Python task. It define the task name.
     :param definition: String format of Python script you want to execute or Python callable you