Update tip136.md

corrected typo

blog/tip136.md

@@ -60,6 +60,6 @@ Michael's Internal Subscription (xxx)                                        Fal
 
 If you're not in the right subscription then type `func azure account set <subid>` where `subid` is the correct subscription.
 
-Now run `func azure function app fetch-app-settings <functionname>` where `functionname` is your Azure Function and it will restore your `local.settings.json` file!
+Now run `func azure functionapp fetch-app-settings <functionname>` where `functionname` is your Azure Function and it will restore your `local.settings.json` file!
 
 <img :src="$withBase('/files/functioncliappsettings.png')">