PY-9795 Better docstring updates: avoid extra blank line in empty docstring and keep blank lines after last field in section

python/testData/intentions/afterAddMissingParamsInGoogleDocStringNoParamSection.py

@@ -1,6 +1,5 @@
 def f(x, y, z):
     """
-
     Args:
       x: 
       y: 

python/testData/intentions/afterParamTypeInEmptyGoogleDocString.py

@@ -1,6 +1,5 @@
 def f(x, y):
     """
-
     Args:
       x (object): 
     """

python/testData/intentions/afterParamTypeInEmptyNumpyDocString.py

@@ -1,6 +1,5 @@
 def f(x, y):
     """
-
     Parameters
     ----------
     x : object

python/testData/intentions/afterReturnTypeInEmptyGoogleDocString.py

@@ -1,6 +1,5 @@
 def f(x, y):
     """
-
     Returns:
       object: 
     """

python/testData/intentions/afterReturnTypeInEmptyNumpyDocString.py

@@ -1,6 +1,5 @@
 def f(x, y):
     """
-
     Returns
     -------
     object