Update default interpreter description (#328)

Update default interpreter description in README.md

README.md

@@ -41,7 +41,7 @@ If you want to disable isort extension, you can [disable this extension](https:/
 | isort.check            | `false`                           | Runs `isort --check` on open files and reports sorting issues as `Hint`. Update `isort.severity` to show sorting issues with higher severity.                                                                                                                            |
 | isort.severity         | `{ "W": "Warning", "E": "Hint" }` | Controls mapping of severity from `isort` to VS Code severity when displaying in the problems window.                                                                                                                                                                    |
 | isort.path             | `[]`                              | Setting to provide custom `isort` executable. This will slow down formatting, since we will have to run `isort` executable every time or file save or open. Example 1: `["~/global_env/isort"]` Example 2: `["conda", "run", "-n", "lint_env", "python", "-m", "isort"]` |
-| isort.interpreter      | `[]`                              | Path to a python interpreter to use to run the linter server.                                                                                                                                                                                                            |
+| isort.interpreter      | `[]`                              | Path to a python interpreter to use to run the linter server. When set to `[]`, it will use the Python extension's selected interpreter. If set to some path, that path takes precedence, and the Python extension is not queried for the interpreter.                                                                                                                                                                                                            |
 | isort.importStrategy   | `useBundled`                      | Setting to choose where to load `isort` from. `useBundled` picks isort bundled with the extension. `fromEnvironment` uses `isort` available in the environment.                                                                                                          |
 | isort.showNotification | `off`                             | Setting to control when a notification is shown.                                                                                                                                                                                                                         |
 | isort.serverEnabled    | `true`                            | **Experimental** setting to control running `isort` in a server like mode. By default we run `isort` behind LSP server, this setting allows users to turn off the server and run isort directly.                                                                                                                                                                                                                            |