Grammar fix: Missing "is" in websocket EN article

The english websocket article was missing an "in". I fixed it for you. :)
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Michael Born 2020-06-03 11:18:56 -04:00 committed by GitHub
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@ -15,7 +15,7 @@ let socket = new WebSocket("*!*ws*/!*://javascript.info");
There's also encrypted `wss://` protocol. It's like HTTPS for websockets. There's also encrypted `wss://` protocol. It's like HTTPS for websockets.
```smart header="Always prefer `wss://`" ```smart header="Always prefer `wss://`"
The `wss://` protocol not only encrypted, but also more reliable. The `wss://` protocol is not only encrypted, but also more reliable.
That's because `ws://` data is not encrypted, visible for any intermediary. Old proxy servers do not know about WebSocket, they may see "strange" headers and abort the connection. That's because `ws://` data is not encrypted, visible for any intermediary. Old proxy servers do not know about WebSocket, they may see "strange" headers and abort the connection.