We have to list each readme as per vsts docs:
```
Tips:
* Wild cards are not supported with path filters.
* Paths are always specified relative to the root of the repository.
* If you don't set path filters, then the root folder of the repo is implicitly included by default.
* If you exclude a path, you cannot also include it unless you qualify it to a deeper folder. For example if you exclude /tools then you could include /tools/trigger-runs-on-these
* The order of path filters doesn't matter.
* Paths in Git are case-sensitive. Be sure to use the same case as the real folders.
* You cannot use variables in paths, as variables are evaluated at runtime (after the trigger has fired).
```
src: https://docs.microsoft.com/en-us/azure/devops/pipelines/repos/github?view=azure-devops&tabs=yaml#ci-triggers
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