chore: Update contributor profile images

Updates the images for Petrut Bogdan and Luuk

Author: neural-loop

content/contributors/luuk-van-keeken/index.md

@@ -1,8 +1,8 @@
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 title: "Luuk van Keeken"
 description: "Researcher/PhD student at KTH Royal Institute of Technology, specializing in Neuromorphic Intermediate Representation (NIR) and its PyTorch applications."
-image: "" # To be replaced with "luuk-van-keeken.jpg" or similar
+image: "luuk-van-keeken.jpeg" # To be replaced with "luuk-van-keeken.jpg" or similar
 social: []
 draft: false
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-Luuk van Keeken is a researcher/PhD student at KTH Royal Institute of Technology, focusing on neuromorphic computing, specifically related to the Neuromorphic Intermediate Representation (NIR) and its applications with frameworks like PyTorch.
+Luuk van Keeken is a researcher/PhD student at KTH Royal Institute of Technology, focusing on neuromorphic computing, specifically related to the Neuromorphic Intermediate Representation (NIR) and its applications with frameworks like PyTorch.

content/contributors/luuk-van-keeken/luuk-van-keeken.jpeg

@@ -1,6 +1,6 @@
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 title: "Petruț Bogdan"
-image: "" # To be replaced with "petrut-bogdan.jpg" or similar
+image: "petrut-bogdan.jpeg" # To be replaced with "petrut-bogdan.jpg" or similar
 description: "Software developer at Innatera, active in the neuromorphic community. Contributes to Faery, explores hardware-software co-design (Innatera, NIR)."
 social: []
 draft: false