fix: hidden family in dynamic family with a sub root

src/rougail/output_doc/collect.py

@@ -440,7 +440,7 @@ class Collect(_ToString):
         path = family.path(uncalculated=True)
         informations = {}
         if not self._collect(family, informations, family_type=family_type):
-            return False, []
+            return False
         if family_type == "sequence":
             informations.setdefault("help", []).append(
                 _("This family contains lists of variable blocks")

tests/root/00_file.yml

@@ -46,4 +46,9 @@ a_dynamic_{{ identifier }}:
       - family4
 
     a_variable: a_value  # a variable
+
+  an_hidden_family:
+    hidden: true
+    
+    an_hidden_variable:
 ...