Python: Fix grammar

Co-authored-by: Taus <tausbn@github.com>

Author: RasmusWL

python/ql/test/library-tests/PointsTo/regressions/wrong/module-imports/conflict-stdlib/README.md

@@ -1,6 +1,6 @@
-This test shows how we handle modules the shadow a module in the standard library.
+This test shows how we handle modules that shadow a module in the standard library.
 
-We manually replicate the behavior of `codeql database create --source-root <src-dir>`, which will use `-R <src-dir>`. By default, the way qltest invokes the extractor will cause different behavior. Therefore, we also need to move our code outside of the top-level folder, and it lives in `code-invalid-package-name/` -- notice that if we use `code` as the folder name, the extractor will treat it as if there is a package called `code` (note, `codeql database create` would not the folder `code` as a package when `code` is used as the `--source-root`).
+We manually replicate the behavior of `codeql database create --source-root <src-dir>`, which will use `-R <src-dir>`. By default, the way qltest invokes the extractor will cause different behavior. Therefore, we also need to move our code outside of the top-level folder, and it lives in `code-invalid-package-name/` -- notice that if we use `code` as the folder name, the extractor will treat it as if there is a package called `code` (note, `codeql database create` would not treat the folder `code` as a package when `code` is used as the `--source-root`).
 
 The results from `LocalModules.ql`, where everything is a script, matches with the extractor :+1: