Update my_first_app/chapter_1.md

src/my_first_app/chapter_1.md

@@ -36,7 +36,7 @@ Options:
   -a, --package <PACKAGE>      Name of the package [default: DIR]
   -u, --publisher <PUBLISHER>  Name of the publisher [default: template.os]
   -l, --language <LANGUAGE>    Programming language of the template [default: rust] [possible values: rust, python, javascript]
-  -t, --template <TEMPLATE>    Template to create [default: chat] [possible values: chat, echo, fibonacci]
+  -t, --template <TEMPLATE>    Template to create [default: chat] [possible values: chat, echo, fibonacci, file_transfer]
       --ui                     If set, use the template with UI
   -h, --help                   Print help
 ```