chore: add docs/ to apm-python code ownership (#10041)

- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

- [ ] Reviewer has checked that all the criteria below are met
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
- Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

(cherry picked from commit f64bd48)

.github/CODEOWNERS

@@ -123,6 +123,8 @@ mypy.ini                            @DataDog/python-guild  @DataDog/apm-core-pyt
 ddtrace/internal/_file_queue.py     @DataDog/python-guild
 ddtrace/internal/_unpatched.py      @DataDog/python-guild
 ddtrace/internal/compat.py          @DataDog/python-guild  @DataDog/apm-core-python
+ddtrace/settings/config.py          @DataDog/python-guild  @DataDog/apm-sdk-api-python
+docs/                               @DataDog/python-guild
 tests/utils.py                      @DataDog/python-guild
 tests/.suitespec.json               @DataDog/python-guild  @DataDog/apm-core-python
 tests/suitespec.py                  @DataDog/python-guild  @DataDog/apm-core-python