use congo thumb and cover images (#39)

#### 📖 Summary

<!-- Provide a summary of your changes. Describe the why and not how. -->

#### 📑 Test Plan

> 💡 Select your test plan for the code changes.

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

##### Details / Justification

<!-- Add your test details or justification for missing tests here. -->

#### 📚 Additional Notes

<!-- A place for additional detail notes. -->

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

content/posts/pwsh-resources/index.md

@@ -9,8 +9,6 @@ tags: ['resources']
 draft: false
 ---
 
-{{< figure src="res-posh.jpg" width="1200" height="800" caption="Photo by Eugenio Mazzone on Unsplash." >}}
-
 ## The Journey Begins Now Young Novice
 
 In this section you find the most basic stuff. It's aimed to help beginners who just got in touch with PowerShell.