Fix date field for Ruby 2.6 series

stomar · web-flow · commit 845d49832796 · 2018-12-26T08:17:32.000+01:00
diff --git a/_data/branches.yml b/_data/branches.yml
@@ -10,7 +10,7 @@
 
 - name: 2.6
   status: normal maintenance
-  status: 2018-12-25
+  date: 2018-12-25
   eol_date:
 
 - name: 2.5
