Merge pull request #690 from PrefectHQ/fix-link-2

fix bad link for old docs

docs/help/legacy_docs.md

@@ -9,7 +9,7 @@ If you want to view documentation of previous versions of Marvin, here's a step
 - `pip`
 
 ## Automated Script for Legacy Documentation
-To build and view the docs for a specific version of Marvin, you can use [this script](/scripts/serve_legacy_docs).
+To build and view the docs for a specific version of Marvin, you can use [this script](https://github.com/PrefectHQ/marvin/blob/main/scripts/serve_legacy_docs).
 
 You can either clone the [Marvin repo](https://github.com/PrefectHQ/marvin.git) and run the script locally, or copy the script and run it directly in your terminal after making it executable:
 ```bash