BUG: Ensure trailing LF in markdown output (Module.text())

Compatible with markdownlint.

Fixes #458

Thanks!

Author: kernc

pdoc/__init__.py

@@ -889,7 +889,10 @@ def text(self, **kwargs) -> str:
         Returns the documentation for this module as plain text.
         """
         txt = _render_template('/text.mako', module=self, **kwargs)
-        return re.sub("\n\n\n+", "\n\n", txt)
+        txt = re.sub("\n\n\n+", "\n\n", txt)
+        if not txt.endswith('\n'):
+            txt += '\n'
+        return txt
 
     def html(self, minify=True, **kwargs) -> str:
         """

pdoc/test/__init__.py

@@ -1200,6 +1200,10 @@ def test_mock_signature_error(self):
         # GH-350 -- throws `TypeError: 'Mock' object is not subscriptable`:
         self.assertIsInstance(inspect.signature(Mock(spec=lambda x: x)), inspect.Signature)
 
+    def test_ends_with_newline(self):
+        self.assertEqual('\n', DUMMY_PDOC_MODULE.text()[-1])
+        self.assertEqual('\n', DUMMY_PDOC_MODULE.html()[-1])
+
 
 class HtmlHelpersTest(unittest.TestCase):
     """