Squash some Sphinx warnings

docs/Makefile

@@ -51,7 +51,7 @@ help:
 
 clean:
 	rm -rf $(BUILDDIR)/*
-	rm -rf config.rst
+	rm -rf source/config.rst
 
 html: source/config.rst
 	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html

docs/source/changelog.rst

@@ -13,6 +13,7 @@ For more detailed information, see
      upgrade to the latest release.
 
 .. we push for pip 9+ or it will break for Python 2 users when IPython 6 is out.
+
 We strongly recommend that you upgrade to version 9+ of pip before upgrading ``notebook``.
 
 .. tip::

notebook/notebookapp.py

@@ -832,9 +832,11 @@ class NotebookApp(JupyterApp):
         `new` argument passed to the standard library method `webbrowser.open`.
         The behaviour is not guaranteed, but depends on browser support. Valid
         values are:
-            2 opens a new tab,
-            1 opens a new window,
-            0 opens in an existing window.
+
+         - 2 opens a new tab,
+         - 1 opens a new window,
+         - 0 opens in an existing window.
+
         See the `webbrowser.open` documentation for details.
         """))