fixed PY-8520 Refill Paragraph should not move first line in docstring to the line with quotes

do not move docstring if it is from the beginning at the first string (or the last) with quotes

python/testData/fillParagraph/prefixPostfix.py

@@ -0,0 +1,6 @@
+__author__ = 'ktisha'
+
+def foo():
+    """A M<caret>ap from key to total # of views by that key. This can be expensive to
+    the big fetch with blackjack and whores, so we generally want to fetch this only for keys that have a large
+    absolute number of views, a small number of days between views, etc."""