Add TODO for run.timeout

Author: alexandear

docs/src/docs/product/migration-guide.mdx

@@ -307,6 +307,8 @@ See [golangci-lint#5470](https://github.com/golangci/golangci-lint/pull/5470) fo
 
 2. `run.timeout` is `0` (disabled) by default.
 
+TODO: see https://github.com/golangci/golangci-lint/pull/5506#discussion_r1984001235
+
 In v1, `run.timeout` was `1m` by default.
 
 <details>