docs: fix typo

Author: finswimmer

docs/_index.md

@@ -327,7 +327,7 @@ virtualenv /opt/poetry
 {{% note %}}
 If you install Poetry via `pip`, ensure you have Poetry installed into an isolated environment that is **not the same**
 as the target environment managed by Poetry. If Poetry and your project are installed into the same environment, Poetry
-is likely to upgrade or uninstall its down dependencies (causing hard-to-debug and understand errors).
+is likely to upgrade or uninstall its own dependencies (causing hard-to-debug and understand errors).
 {{% /note %}}
 
 **Version pinning**