PY-16765 In Google docstrings smart enter adds colon and indentation after section header

python/testData/codeInsight/smartEnter/googleDocStringColonAndIndentAfterSection.py

@@ -0,0 +1,4 @@
+def func():
+    """
+    A<caret>rgs
+    """

python/testData/codeInsight/smartEnter/googleDocStringColonAndIndentAfterSection_after.py

@@ -0,0 +1,5 @@
+def func():
+    """
+    Args:
+      <caret>  
+    """

python/testData/codeInsight/smartEnter/googleDocStringIndentAfterSection.py

@@ -0,0 +1,4 @@
+def f():
+    """
+    Raises: <caret>
+    """

python/testData/codeInsight/smartEnter/googleDocStringIndentAfterSection_after.py

@@ -0,0 +1,5 @@
+def f():
+    """
+    Raises:
+      <caret>
+    """