Fix paths to Volto contributing

Author: stevepiercy

docs/conf.py

@@ -130,7 +130,7 @@
     "plone.restapi/news",
     "plone.restapi/performance",
     "plone.restapi/src",
-    "volto/developer-guidelines/branch-policy.md",
+    "volto/contributing/branch-policy.md",
 ]
 
 html_js_files = ["patch_scrollToActive.js", "search_shortcut.js"]

docs/contributing/index.md

@@ -129,7 +129,7 @@ Plone REST API
 
 Volto
 :   Plone 6 default frontend.
-    See {doc}`../volto/developer-guidelines/contributing`.
+    See {doc}`../volto/contributing/index`.
 
 
 ```{toctree}
@@ -143,5 +143,5 @@ first-time
 documentation/index
 ../plone.api/contribute/index
 ../plone.restapi/docs/source/contributing/index
-../volto/developer-guidelines/contributing
+../volto/contributing/index
 ```