docs(plugin-coverage): include empty-report omission in README

packages/plugin-coverage/README.md

@@ -214,7 +214,11 @@ For instance, the following can be an audit output for line coverage.
 }
 ```
 
-### Providing coverage results in Nx monorepo
+### Coverage results alteration
+
+At the moment, the LCOV results include `(empty-report)` functions with missing coverage. These point to various imports or exports, not actual functions. For that reason, they are omitted from the results.
+
+## Providing coverage results in Nx monorepo
 
 As a part of the plugin, there is a `getNxCoveragePaths` helper for setting up paths to coverage results if you are using Nx. The helper accepts all relevant targets (e.g. `test` or `unit-test`) and searches for a coverage path option.
 Jest and Vitest configuration options are currently supported: