doc(relay): Link to relay config values

[elramen]

DESCRIBE YOUR PR

As a follow up on #17114 (review) :

• link directly to ConfigValues instead of the entire crate.
• link to an example config to make it clearer how ConfigValues map to keys in the actual config.yml

Fixes https://linear.app/getsentry/issue/INGEST-687/replace-product-relay-configuration-options-with-link-to-rust-docs

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[linear-code]

INGEST-687 Replace Product -> Relay -> Configuration Options with link to rust docs

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix prepared a fix for the issue found in the latest run.

• ✅ Fixed: Duplicated config example across two documentation files
  • I removed the duplicated YAML blocks and replaced the defaults wording with a reference to the Getting Started example config mapping.

Or push these changes by commenting:

@cursor push d254b10ff4

Preview (d254b10ff4)

diff --git a/docs/product/relay/options.mdx b/docs/product/relay/options.mdx
--- a/docs/product/relay/options.mdx
+++ b/docs/product/relay/options.mdx
@@ -22,26 +22,6 @@
 
 ## Configuration Reference
 
-For a comprehensive and up-to-date list of all configuration options, see [ConfigValues](https://getsentry.github.io/relay/relay_config/struct.ConfigValues.html). Note that some options, such as `processing`, are only relevant when [self-hosting](https://develop.sentry.dev/self-hosted/). 
+For a comprehensive and up-to-date list of all configuration options, see [ConfigValues](https://getsentry.github.io/relay/relay_config/struct.ConfigValues.html). Note that some options, such as `processing`, are only relevant when [self-hosting](https://develop.sentry.dev/self-hosted/).
 
-All configuration values are optional and default to these settings:
-
-```yaml {tabTitle:Run in Docker}
-relay:
-  mode: managed
-  # The upstream hostname is taken from any of your DSNs.
-  # Go to your Project Settings, and then to "Client Keys (DSN)" to see them.
-  upstream: https://___ORG_INGEST_DOMAIN___
-  host: 0.0.0.0
-  port: 3000
-```
-
-```yaml {tabTitle:Run Executable}
-relay:
-  mode: managed
-  # The upstream hostname is taken from any of your DSNs.
-  # Go to your Project Settings, and then to "Client Keys (DSN)" to see them.
-  upstream: https://___ORG_INGEST_DOMAIN___
-  host: 127.0.0.1
-  port: 3000
\ No newline at end of file
-```
+For an example `config.yml` showing how `ConfigValues` map to YAML keys, see [Getting Started](../getting-started/).
\ No newline at end of file

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