[tests] Re-add test for kb.mozillazine.org

Test was removed after site_detect_tests.py cleanup but
seems that the MediaWiki version was updated from pre-API
to 1.26.4

Change-Id: Ib7024992cbeaacb18ab73ec81aafabdd1e20914a
---
M tests/site_detect_tests.py
1 file changed, 14 insertions(+), 0 deletions(-)

diff --git a/tests/site_detect_tests.py b/tests/site_detect_tests.py
index 2c9a224..3b56837 100755
--- a/tests/site_detect_tests.py
+++ b/tests/site_detect_tests.py
@@ -78,6 +78,7 @@
         'http://www.otterstedt.de/wiki/index.php/$1',
         'http://kb.mozillazine.org/$1',
         'https://en.wikifur.com/wiki/$1',  # 1.23.16
+        'http://kb.mozillazine.org/$1'  # 1.26.4
     )
 
     no_sites = (

