DOC: Clean up warnings in docs.

Author: Scott Sanderson

docs/conf.py

@@ -92,7 +92,7 @@
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ["_static"]
+# html_static_path = ["_static"]
 
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.

docs/errors.rst

@@ -1,3 +1,5 @@
+.. _error-detection:
+
 Error Detection
 ---------------
 

docs/index.rst

@@ -4,7 +4,7 @@
 :mod:`interface` is a library for declaring interfaces and for statically
 asserting that classes implement those interfaces. It provides stricter
 semantics than Python's built-in :mod:`abc` module, and it aims to produce
-`exceptionally useful error messages`_ when interfaces aren't satisfied.
+:ref:`exceptionally useful error messages <error-detection>` when interfaces aren't satisfied.
 
 :mod:`interface` supports Python 2.7 and Python 3.4+.
 
@@ -50,5 +50,3 @@ Indices and tables
 * :ref:`genindex`
 * :ref:`modindex`
 * :ref:`search`
-
-.. _`exceptionally useful error messages` : errors.html