[bugfix] Fix wowwiki nn code alias

Change-Id: Idc61a549bdff0e023b65a957b2816ce9849ab892
---
M pywikibot/families/wowwiki_family.py
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pywikibot/families/wowwiki_family.py b/pywikibot/families/wowwiki_family.py
index 2727a38..47466ad 100644
--- a/pywikibot/families/wowwiki_family.py
+++ b/pywikibot/families/wowwiki_family.py
@@ -20,12 +20,14 @@
 
     codes = (
         'ar', 'cs', 'da', 'de', 'el', 'en', 'es', 'et', 'fa', 'fi', 'fr', 'he',
-        'hu', 'is', 'it', 'ja', 'ko', 'lt', 'lv', 'nl', 'nn', 'no', 'pl', 'pt',
+        'hu', 'is', 'it', 'ja', 'ko', 'lt', 'lv', 'nl', 'no', 'pl', 'pt',
         'pt-br', 'ru', 'sk', 'sv', 'tr', 'uk', 'zh', 'zh-tw'
     )
 
     removed_wikis = ['hr', 'ro', 'sr']
 
+    code_aliases = {'nn': 'no'}
+
     @classproperty
     @deprecated('codes attribute', since='20190422')
     def languages_by_size(cls):

