Update map, keep HD

The map image is now 2 MB, hopefully that isn't too bad

Author: SheepTester

README.md

@@ -91,7 +91,9 @@ $ deno task classrooms:build
 $ ./scripts/deploy.sh ./classrooms/public/ classrooms
 ```
 
-Map image was made with [this tool](https://sheeptester.github.io/words-go-here/misc/ucsd-map.html) (zoom 17, x: -6 to 5, y: -6 to 4). Because the map is now HD, please scale the image down to 3072 by 2816.
+Map image was made with [this tool](https://sheeptester.github.io/words-go-here/misc/ucsd-map.html) (zoom 17, x: -6 to 5, y: -6 to 4).
+
+<!-- Because the map is now HD, please scale the image down to 3072 by 2816. -->
 
 Current uses: