conf2reST.py: fix nest.yaml case

conf2reST.py

@@ -158,7 +158,7 @@
                 group = 'modules'
             else:
                 group = 'other'
-            rst[section][module] = {
+            rst[group][module] = {
                 'version': repos[module]['track'],
                 'repository': repos[module]['pulluri'],
             }