fix: broken link to usage.mdx

Author: jescalada

website/docs/deployment.mdx

@@ -50,7 +50,7 @@ For quick local testing before committing to a full installation, you can use `n
 npx -- @finos/git-proxy --config ./proxy.config.json
 ```
 
-For persistent deployments, prefer `npm install -g` with version pinning (e.g., `npm install -g @finos/git-proxy@2.x.x`). See [Usage](/docs/usage) for more details.
+For persistent deployments, prefer `npm install -g` with version pinning (e.g., `npm install -g @finos/git-proxy@2.x.x`). See [Usage](/docs/quickstart/usage) for more details.
 :::
 
 ### 2. Create a Configuration File