docs: fix link to example JWT

docs/hub/troubleshooting.md

@@ -8,7 +8,7 @@
 * Be sure to set a **secret key** (and not a JWT) in `JWT_KEY` (or in `SUBSCRIBER_JWT_KEY` and `PUBLISHER_JWT_KEY`)
 * If the secret key contains special characters, be sure to escape them properly, especially if you set the environment variable in a shell, or in a YAML file (Kubernetes...)
 * The publisher always needs a valid JWT, even if the `anonymous` directive is present in the `Caddyfile`, this JWT **must** have a property named `publish`. To dispatch private updates, the `publish` property must contain the list of topic selectors this publisher can use ([example](https://jwt.io/#debugger-io?token=eyJhbGciOiJIUzI1NiJ9.eyJtZXJjdXJlIjp7InB1Ymxpc2giOlsiKiJdLCJzdWJzY3JpYmUiOlsiaHR0cHM6Ly9leGFtcGxlLmNvbS9teS1wcml2YXRlLXRvcGljIiwie3NjaGVtZX06Ly97K2hvc3R9L2RlbW8vYm9va3Mve2lkfS5qc29ubGQiLCIvLndlbGwta25vd24vbWVyY3VyZS9zdWJzY3JpcHRpb25zey90b3BpY317L3N1YnNjcmliZXJ9Il0sInBheWxvYWQiOnsidXNlciI6Imh0dHBzOi8vZXhhbXBsZS5jb20vdXNlcnMvZHVuZ2xhcyIsInJlbW90ZUFkZHIiOiIxMjcuMC4wLjEifX19.KKPIikwUzRuB3DTpVw6ajzwSChwFw5omBMmMcWKiDcM))
-* The subscriber needs a valid JWT only if the `anonymous` directive isn't present in the `Caddyfile`, or to subscribe to private updates, in this case the JWT **must** have a property named `subscribe` and containing an array of topic selectors ([example](eyJhbGciOiJIUzI1NiJ9.eyJtZXJjdXJlIjp7InB1Ymxpc2giOlsiKiJdLCJzdWJzY3JpYmUiOlsiaHR0cHM6Ly9leGFtcGxlLmNvbS9teS1wcml2YXRlLXRvcGljIiwie3NjaGVtZX06Ly97K2hvc3R9L2RlbW8vYm9va3Mve2lkfS5qc29ubGQiLCIvLndlbGwta25vd24vbWVyY3VyZS9zdWJzY3JpcHRpb25zey90b3BpY317L3N1YnNjcmliZXJ9Il0sInBheWxvYWQiOnsidXNlciI6Imh0dHBzOi8vZXhhbXBsZS5jb20vdXNlcnMvZHVuZ2xhcyIsInJlbW90ZUFkZHIiOiIxMjcuMC4wLjEifX19.KKPIikwUzRuB3DTpVw6ajzwSChwFw5omBMmMcWKiDcM))
+* The subscriber needs a valid JWT only if the `anonymous` directive isn't present in the `Caddyfile`, or to subscribe to private updates, in this case the JWT **must** have a property named `subscribe` and containing an array of topic selectors ([example](https://jwt.io/#debugger-io?token=eyJhbGciOiJIUzI1NiJ9.eyJtZXJjdXJlIjp7InB1Ymxpc2giOlsiKiJdLCJzdWJzY3JpYmUiOlsiaHR0cHM6Ly9leGFtcGxlLmNvbS9teS1wcml2YXRlLXRvcGljIiwie3NjaGVtZX06Ly97K2hvc3R9L2RlbW8vYm9va3Mve2lkfS5qc29ubGQiLCIvLndlbGwta25vd24vbWVyY3VyZS9zdWJzY3JpcHRpb25zey90b3BpY317L3N1YnNjcmliZXJ9Il0sInBheWxvYWQiOnsidXNlciI6Imh0dHBzOi8vZXhhbXBsZS5jb20vdXNlcnMvZHVuZ2xhcyIsInJlbW90ZUFkZHIiOiIxMjcuMC4wLjEifX19.KKPIikwUzRuB3DTpVw6ajzwSChwFw5omBMmMcWKiDcM))
 
 For both the `publish` property, the array can be empty to publish only public updates. For both `publish` and `subscribe`, you can use `["*"]` to match all topics.