docstrings: fix "Sphinx param with type" pattern (#807)

* docstrings: fix "Sphinx param with type" pattern

Previously, the pattern only matched if the parameter description
followed on the same line, like so:

    :param type foo: A param named foo.

However, it's also valid for the parameter description to be wrapped
onto the next line, like so:

    :param type foo:
        A param named foo.

This change updates the pattern to match the second example as well, and
adds a test to verify this behaviour.

Fixes #806.

* Add Simon Ruggier to the AUTHORS file

jedi/evaluate/docstrings.py

@@ -29,7 +29,7 @@ from jedi.evaluate.iterable import SequenceLiteralContext, FakeSequence
 
 DOCSTRING_PARAM_PATTERNS = [
     r'\s*:type\s+%s:\s*([^\n]+)',  # Sphinx
-    r'\s*:param\s+(\w+)\s+%s:[^\n]+',  # Sphinx param with type
+    r'\s*:param\s+(\w+)\s+%s:[^\n]*',  # Sphinx param with type
     r'\s*@type\s+%s:\s*([^\n]+)',  # Epydoc
 ]