Fix i18n command typo in readme

Toaster192 · cburmeister · commit a95fdda097a7 · 2019-11-25T09:47:11.000-08:00
diff --git a/README.md b/README.md
@@ -240,7 +240,7 @@ pybabel extract -F babel.cfg -o i18n/messages.pot .
 
 Create a new resource (.po) for German translators:
 ```bash
-pybabel init -i i81n/messages.pot -d i18n -l de
+pybabel init -i i18n/messages.pot -d i18n -l de
 ```
 
 Compile translations (.mo):
