Remove unnecessary text from 2020/ferguson1

It's still a lot of text but now it's a bit less to .. uh, swallow. One
file was removed as it really served no purpose other than to make the
documentation longer in a way that is not helpful.

Updated manifest.

Regenerated html files.

2020/ferguson1/.entry.json

@@ -281,14 +281,6 @@
 	    "display_via_github" : true,
 	    "entry_text" : "markdown source for gameplay.html"
 	},
-	{
-	    "file_path" : "halfwidth_vs_fullwidth.png",
-	    "inventory_order" : 4000000000,
-	    "OK_to_edit" : true,
-	    "display_as" : "image",
-	    "display_via_github" : false,
-	    "entry_text" : "image for bugs.md"
-	},
 	{
 	    "file_path" : "ioccc-cake.jpg",
 	    "inventory_order" : 4000000000,