docs: use local link for proxy troubleshooting guide

Author: nfriedly

docs/reference/error-codes.mdx

@@ -62,15 +62,15 @@ Set `validate: {ip: false}` in the options to disable the check.
 
 > Added in `6.8.0`.
 
-This error is logged when the trust proxy setting is set to `true`.
+This error is logged when the `trust proxy` setting is set to `true`.
 
 If this is set to true, it will cause express to return the leftmost entry in
 the `X-Forwarded-For` header as the client's IP. This header could be set by the
 proxy or a malicious client, opening up avenues for bypassing the rate limiter.
 
 Refer to the
-[troubleshooting proxy issues](https://github.com/express-rate-limit/express-rate-limit/wiki/Troubleshooting-Proxy-Issues)
-page for a guide to set the `trust proxy` value correctly.
+[troubleshooting proxy issues](/guides/troubleshooting-proxy-issues) page for a
+guide to set the `trust proxy` value correctly.
 
 This check will be prevented if a custom `keyGenerator` is supplied.
 
@@ -81,12 +81,12 @@ Set `validate: {trustProxy: false}` in the options to disable the check.
 > Added in `6.8.0`.
 
 This error is logged when the `X-Forwarded-For` header is set (indicating use of
-a proxy), but the trust proxy setting is `false` (which is the default value).
+a proxy), but the `trust proxy` setting is `false` (which is the default value).
 
 This usually indicates a configuration issue that will cause express-rate-limit
 to apply it's limits global rather than on a per-user basis. Refer to the
-[troubleshooting proxy issues](https://github.com/express-rate-limit/express-rate-limit/wiki/Troubleshooting-Proxy-Issues)
-page for a guide to set the `trust proxy` value correctly.
+[troubleshooting proxy issues](/guides/troubleshooting-proxy-issues) page for a
+guide to set the `trust proxy` value correctly.
 
 If this error occurs only rarely, and you do not have a reverse proxy, it may
 indicate a malicious user probing for vulnerabilities.