use congo thumb and cover images (#39)

#### 📖 Summary

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#### 📑 Test Plan

> 💡 Select your test plan for the code changes.

- [x] CI pipeline
- [ ] Custom test
- [ ] No test plan

##### Details / Justification

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#### 📚 Additional Notes

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Co-authored-by: OCram85 <marco.blessing@googlemail.com>
Reviewed-on: #39

content/posts/pstypename/index.md

@@ -18,8 +18,6 @@ showDateUpdated: true
 # sharingLinks: [null]
 ---
 
-![ship](ship.jpg 'Photo by [Rod Long](https://unsplash.com/@rodlong) on [Unsplash](https://unsplash.com)')
-
 ## 🖼️ Intro
 
 This post explains how to use `PSCustomObject`s as function parameters. We compare the basic usage with an