fix: try to get images to render

blog/blog_gsoc_2025_announcement.md

@@ -47,6 +47,20 @@ PyMC is participating in 2025 Google Summer of Code (GSoC).
     Figure Caption
 
 
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+:::{grid-item-card} Current style
+:img-background: ../_static/gsoc_2025/numfocus.png
+:link: https://www.pymc.io/projects/examples/en/2022.01.0/generalized_linear_models/GLM-model-selection.html
+:::
+
+:::{grid-item-card} Old style
+:img-background: ../_static/PyMC.jpg
+:link: https://www.pymc.io/projects/docs/en/v3/pymc-examples/examples/generalized_linear_models/GLM-model-selection.html
+:::
+::::
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 ## Intro
 
 We are excited to share that the PyMC project is once again participating in [Google Summer of Code (GSoC)](https://opensource.googleblog.com/2025/02/meet-mentoring-organizations-of-gsoc.html) under the [NumFOCUS umbrella](https://github.com/numfocus/gsoc/blob/master/2025/ideas-list.md).
@@ -61,7 +75,6 @@ To be considered as a GSoC student, you should make a PR to PyMC / PyTensor. It
 
 If you are a student interested in participating, please contact us [on our PyMC Discourse site](https://discourse.pymc.io/).
 
-
 ## Project Ideas
 
 Below is a list of possible topics for your GSoC project, **we are also open to other topics**, contact us on [Discourse](https://discourse.pymc.io/).
@@ -96,7 +109,7 @@ Read about our past interns:
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-### Contribute to PyMC
+## Contribute to PyMC
 
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 :::{button-link} https://www.dataumbrella.org/open-source/contributing-to-pymc
@@ -108,6 +121,16 @@ PyMC Contributing resources
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+:::{button-link} https://www.dataumbrella.org/open-source/contributing-to-pymc
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+:class: sd-fs-5
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+PyMC Contributing resources
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 ## [GSoC 2025 Timeline](https://developers.google.com/open-source/gsoc/timeline)
 
 These are key 2025 dates: