Feat: add MAR20191 as mitochondrial reaction of MAR03890 (#995)

* Feat: add MAR20189

* chore: add macaw test result

---------

Co-authored-by: JHL-452b <JHL-452b@users.noreply.github.com>
Co-authored-by: Eduard Kerkhoven <eduardk@chalmers.se>

Author: JHL-452b

data/testResults/README.md

@@ -2,9 +2,9 @@
 
 The file here contains results from the [MACAW](https://github.com/Devlin-Moyer/macaw) `dead_end_test` and `duplicate_test` tests, and from cell-line specific gene essentiality prediction based on the [Hart _et al._ (2015)](https://doi.org/10.1016/j.cell.2015.11.015) dataset.
 
-The test results shown in this folder were last modified by the GitHub Actions run in:
+The test results shown here were obtained by the GitHub Actions run in:
 
-- **PR #994** (MACAW)
+- **PR #995** (MACAW)
 - **PR #973** (gene essentiality)
 
 The results will be updated by any subsequent pull request. Summary results are shown as a comment in the corresponding pull request.