No HTTP GET support anymore

chat/matrix/bridges.markdown

@@ -20,7 +20,7 @@ Base URL: `https://hookshot.mbot.ethz.ch/webhook/<hook>`
 3. Send the message `!hookshot webhook <name>` (replace `<name>`)
 4. The bridge will send you an URL
 
-The bridge accepts GET, POST or PUT requests. See [docs](https://matrix-org.github.io/matrix-hookshot/latest/setup/webhooks.html#webhook-handling) for details or the example below.
+The bridge accepts POST or PUT requests. See [docs](https://matrix-org.github.io/matrix-hookshot/latest/setup/webhooks.html#webhook-handling) for details or the example below.
 
 #### Example usage