fix: use GH URLs

index.md

@@ -19,7 +19,7 @@ Enabling Open Science Discoveries
 ::::{card}
 :header: TOPS-T ScienceCore: climaterisk
 :link: https://2i2c.org/demo-Sciencecore-climaterisk/
-:::{image} https://github.com/2i2c-org/demo-Sciencecore-climaterisk/blob/main/book/assets/banner.jpg
+:::{image} https://github.com/2i2c-org/demo-Sciencecore-climaterisk/blob/c8ea979343f5110dc8fe37cdc8ae0a9f684e5c34/book/assets/banner.jpg
 :::
 [NASA Transform to Open Science](https://science.nasa.gov/open-science/tops/https://nasa.github.io/Transform-to-Open-Science-Book/index.html)
 ::::
@@ -28,15 +28,15 @@ Enabling Open Science Discoveries
 :header: icepyx
 :link: http://2i2c.org/demo-icepyx/
 
-:::{image} https://raw.githubusercontent.com/icesat2py/icepyx/d0bc315aca35f0e2b64a0d88baacf33f3395e615/doc/source/_static/icepyx_v2_oval_orig_nobackgr.png
+:::{image} https://github.com/icesat2py/icepyx/blob/d0bc315aca35f0e2b64a0d88baacf33f3395e615/doc/source/_static/icepyx_v2_oval_orig_nobackgr.png
 :::
 Python tools for obtaining and working with ICESat-2 data
 ::::
 
 ::::{card}
 :header: Project Pythia - Radar Cookbook
 :link: https://2i2c.org/demo-Project-Pythia
-:::{image} https://2i2c.org/demo-Project-Pythia/build/phidp_kdp_comparison-9793f0626a055c40a2d3d06d287335c0.png
+:::{image} https://github.com/2i2c-org/demo-Project-Pythia/blob/184402e8e4b5610e65f32099d376791f204ec8a6/images/phidp_kdp_comparison_cacti.png
 :::
 
 Example workflows for various weather radar data.