Update corgi showcase video and thumbnail (#1337)

Author: sbryngelson

docs/index.html

@@ -55,7 +55,7 @@
             // Aerodynamics
             { name: "Flow over an airfoil (vorticity)",    image: "res/simulations/g.png", computer: "Delta",      computerUrl: "https://www.ncsa.illinois.edu/research/project-highlights/delta/",              accelerators: "128 A100s", walltime: "19h",  source: "https://www.youtube.com/watch?v=FvAgnBW59cY" },
             { name: "Pitching airfoil (3D)",               image: "res/simulations/m.png", computer: "Phoenix",    computerUrl: "https://www.pace.gatech.edu/",                                                 accelerators: "1 A100",    walltime: "5h",   source: "https://www.youtube.com/watch?v=2XH-9MumDHU" },
-            { name: "Flow over a corgi (pressure)",        image: "res/simulations/u.png", computer: "HiPerGator", computerUrl: "https://www.rc.ufl.edu/about/hipergator/",                                     accelerators: "4 B200s",   walltime: "1h",   source: "https://www.youtube.com/watch?v=IFNK3psPf3g" },
+            { name: "Mach 0.3 flow over a corgi (2M STL)", image: "res/simulations/u.png", computer: "HiPerGator", computerUrl: "https://www.rc.ufl.edu/about/hipergator/",                                     accelerators: "2 GPUs",    walltime: "80s",  source: "https://www.youtube.com/watch?v=O8dSRqHLp_o" },
             // Shock-droplet
             { name: "Shedding water droplet",              image: "res/simulations/a.png", computer: "Summit",     computerUrl: "https://www.olcf.ornl.gov/summit/",                                            accelerators: "960 V100s", walltime: "4h",   source: "https://www.youtube.com/watch?v=Gjj-qZkXcrg" },
             // Biomedical & acoustics