main.py: get version from abs URL

The canonical URL seems to always be the "latest" version.
So, previously, version was always "latest" even when on another version (like "master" for example), potentially generating a broken link.

Author: adriendupuis

main.py

@@ -50,6 +50,9 @@ def cards(pages, columns=1, style="cards", force_version=False):
         canonical = current_page.canonical_url
         url_parts = re.search("//([^/]+)/([^/]+)/([^/]+)/", canonical)
         (site, language, version) = url_parts.groups()
+        url_parts = re.search("^/([^/]+)/([^/]+)/", absolute_url)
+        (language, version) = url_parts.groups()
+
         version = force_version or version
 
         if isinstance(pages, str):