Fix some formatting

README.md

@@ -21,7 +21,7 @@ Once bundled the golang program can acess the content via:
     if err != nil {
         panic(err)
     }
-    fs := b.FileSystem() // this returns an htp.FileSyste 
+    fs := b.FileSystem() // this returns an http.FileSystem 
 ```
 
 We can then directly use the returned filesystem to serve http pages/content