fastgpt: add download link

Author: balupton

FastGPT/README.md

@@ -5,3 +5,5 @@ Get access to [Kagi's FastGPT](https://kagi.com/fastgpt) directly within Alfred.
 ![Example Usage of this Kagi FastGPT Workflow for Alfred](https://raw.githubusercontent.com/bevry-labs/alfred-workflows/main/FastGPT/FastGPT.webp)
 
 You will need to configure it with [your API Key and buy credits](https://help.kagi.com/kagi/api/fastgpt.html#quick-start).
+
+[Download.](https://github.com/bevry-labs/alfred-workflows/blob/main/FastGPT/FastGPT.alfredworkflow)