docs: Clarify --out argument

Author: danez

packages/website/src/app/docs/getting-started/cli/page.mdx

@@ -98,6 +98,11 @@ Warnings and errors will still be written to `stderr`.
 react-docgen -o output.json ./src/components/Button.tsx
 ```
 
+<Callout type="warning" emoji="">
+  The output path is used as provided and may overwrite an existing file, so
+  only pass trusted paths to this option.
+</Callout>
+
 The CLI supports a lot more advanced options and for a full list checkout the
 [reference page](../reference/cli)
 

packages/website/src/app/docs/reference/cli/page.mdx

@@ -130,6 +130,11 @@ Enabling this option will disable any of the default ignores specified in the
 Store extracted information in the specified file instead of printing to
 `stdout`. If the file exists it will be overwritten.
 
+<Callout type="warning" emoji="">
+  The output path is used as provided and may overwrite an existing file, so
+  only pass trusted paths to this option.
+</Callout>
+
 **Examples**
 
 ```shell filename="Terminal"