docs: fix broken links in v8 migration guides (#2768)

Co-authored-by: Claude <svc-devxp-claude@slack-corp.com>

Author: WilliamBergamin

docs/english/migration/socket-mode/migrating-socket-mode-package-to-v3.md

@@ -93,7 +93,7 @@ const client = new SocketModeClient({
 
 ### We've updated the dependency on `@slack/web-api@^8`
 
-This package now uses `@slack/web-api@^8` internally. If you're passing `clientOptions`, the web-api breaking changes apply there too. Check the [web-api v8 migration guide](./web-api-v8-migration.md) for details.
+This package now uses `@slack/web-api@^8` internally. If you're passing `clientOptions`, the web-api breaking changes apply there too. Check the [web-api v8 migration guide](../web-api/migrating-web-api-package-to-v8.md) for details.
 
 ```diff
  const client = new SocketModeClient({

docs/english/migration/web-api/migrating-web-api-package-to-v8.md

@@ -337,7 +337,7 @@ function handleError(error: WebAPIHTTPError) {
 
 ### We've removed the `RequestConfig` type
 
-The `RequestConfig` type was an alias for axios's `InternalAxiosRequestConfig`. If you were importing it for `requestInterceptor`, [that has also been removed](requestinterceptor-and-requestinterceptor-type-removed). Use a fetch wrapper instead as described above.
+The `RequestConfig` type was an alias for axios's `InternalAxiosRequestConfig`. If you were importing it for `requestInterceptor`, [that has also been removed](#weve-removed-the-requestinterceptor-and-requestinterceptor-types). Use a fetch wrapper instead as described above.
 
 ```diff
 -import type { RequestConfig } from '@slack/web-api';