Replace sequence diagram image with new link

Updated the sequence diagram to use a new image link.

Author: rmcdaniel

docs/how-it-works.md

@@ -56,7 +56,7 @@ class MyWorkflow extends Workflow
 
 This sequence diagram shows how a Laravel Workflow progresses through a series of activities, both serial and parallel.
 
-![mermaid-diagram-2022-12-08-173913](https://user-images.githubusercontent.com/1130888/206589649-8fc0044d-8089-45a7-a30f-e1bcbb5115cd.png)
+[![](https://mermaid.ink/img/pako:eNqdkkFrg0AQhf-KzNmE7Gp0dw8B015LPRSE4mXRSSJR165r2jTkv3ejmDZICu2edr557w0Mc4JM5QgCWnzrsM7wsZBbLau0duxrpDZFVjSyNk7iyNZJlN5vSvU-bUeX9gu2JspMcSjMcSpZj5Jns0N9XxeTURhLLcsSy1-09CZ0ahgsyWy1ioTTGmsdSDSzKBFOpqqmRIPfyoFrbEp5dPCAtWl_xqxvYtb_jYnJTU6P6BUNMCaT9B7Tvw0FF7a6yEEY3aELFepKXko4XWwp2MVVmIKw31zqfQppfbYeu99XparRplW33YHYyLK1Vdfk0ozHcqUa6xz1g-pqAyLwWB8C4gQfIDxO5tT3WBhyEpKAsaULRxCUWMw5DXkQ-B73WXh24bOfu5j7zF-wJSWLgFPuUxa4gHlhlH4ajra_3fMXT1fgqg?type=png)](https://mermaid.live/edit#pako:eNqdkkFrg0AQhf-KzNmE7Gp0dw8B015LPRSE4mXRSSJR165r2jTkv3ejmDZICu2edr557w0Mc4JM5QgCWnzrsM7wsZBbLau0duxrpDZFVjSyNk7iyNZJlN5vSvU-bUeX9gu2JspMcSjMcSpZj5Jns0N9XxeTURhLLcsSy1-09CZ0ahgsyWy1ioTTGmsdSDSzKBFOpqqmRIPfyoFrbEp5dPCAtWl_xqxvYtb_jYnJTU6P6BUNMCaT9B7Tvw0FF7a6yEEY3aELFepKXko4XWwp2MVVmIKw31zqfQppfbYeu99XparRplW33YHYyLK1Vdfk0ozHcqUa6xz1g-pqAyLwWB8C4gQfIDxO5tT3WBhyEpKAsaULRxCUWMw5DXkQ-B73WXh24bOfu5j7zF-wJSWLgFPuUxa4gHlhlH4ajra_3fMXT1fgqg)
 
 1. The workflow starts by getting dispatched as a queued job.
 2. The first activity, TestActivity, is then dispatched as a queued job. The workflow job then exits. Once TestActivity has completed, it saves the result to the database and returns control to the workflow by dispatching it again.