files.jsee (JavaScript) but « Binary file not shown. »

Hello, 

My files.jsee don’t display content (diff view in commits, etc.), saying that « Binary file not shown. »

How can I tell github that those files are plain JavaScript?

Thanks.

Example: https://github.com/jesus2099/settings/commit/fc76592283073833c08b66857464c3a4031364a4