docs(repositories.md): fix the wrong key and URL of adding publishable repositories

docs/repositories.md

@@ -288,17 +288,17 @@ configuration unlike [package sources](#package-sources). Poetry, today, only su
 your project.
 your project.
 
 
 These are configured using the [`config`]({{< relref "cli#config" >}}) command, under the
 These are configured using the [`config`]({{< relref "cli#config" >}}) command, under the
-`repository` key.
+`repositories` key.
 
 
 ```bash
 ```bash
-poetry config repository.testpypi https://upload.test.pypi.org/legacy/
+poetry config repositories.testpypi https://test.pypi.org/legacy/
 ```
 ```
 
 
 {{% note %}}
 {{% note %}}
 
 
 [Legacy Upload API](https://warehouse.pypa.io/api-reference/legacy.html#upload-api) URLs are
 [Legacy Upload API](https://warehouse.pypa.io/api-reference/legacy.html#upload-api) URLs are
 typically different to the same one provided by the repository for the simple API. You'll note that
 typically different to the same one provided by the repository for the simple API. You'll note that
-in the example of [Test PyPI](https://test.pypi.org/), both the host (`upload.test.pypi.org`) as
+in the example of [Test PyPI](https://test.pypi.org/), both the host (`test.pypi.org`) as
 well as the path (`/legacy`) are different to it's simple API (`https://test.pypi.org/simple`).
 well as the path (`/legacy`) are different to it's simple API (`https://test.pypi.org/simple`).
 
 
 {{% /note %}}
 {{% /note %}}