Fix typo in automatic.md

[Jeldo]

Correct the endpoint value that differs from the description(http://otel-collector.opentelemetry.svc.cluster.local:4317) below.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: Jeldo / name: Taeyoung Kwak (379bb6d, 7e095b8)
• ✅ login: svrnm / name: Severin Neumann (48b3d70)

[jaronoff97]

It looks like the rest of the docs reference demo-collector, should we use that here instead?

[Jeldo]

It looks like the rest of the docs reference demo-collector, should we use that here instead?

@jaronoff97 It would be helpful to understand if we use the same names throughout the document.