Fix typo in stopwords (fixes #689)

spacy/en/language_data.py

@@ -13,7 +13,7 @@
 cry de describe detail did didn do does doesn doing don done down due
 during each eg eight either eleven else elsewhere empty enough etc
 even ever every everyone everything everywhere except few fifteen
-fify fill find fire first five for former formerly forty found four
+fifty fill find fire first five for former formerly forty found four
 from front full further get give go had has hasnt have he hence her
 here hereafter hereby herein hereupon hers herself him himself his
 how however hundred i ie if in inc indeed interest into is it its