fix Docs

docs/conf.py

@@ -295,10 +295,10 @@ texinfo_documents = [
 
 # app setup hook
 def setup(app):
-    app.add_config_value('recommonmark_config', {
+     app.add_config_value('recommonmark_config', {
-        'url_resolver': lambda url: github_doc_root + url,
+         'url_resolver': lambda url: github_doc_root + url,
-        'enable_auto_toc_tree': True,
+         'enable_auto_toc_tree': True,
-        'enable_eval_rst': True,
+         'enable_eval_rst': True,
-        'enable_auto_doc_ref': True,
+         'enable_auto_doc_ref': True,
-    }, True)
+     }, True)
-    app.add_transform(AutoStructify)
+     app.add_transform(AutoStructify)