Remove unnecessary type casting

app.go

@@ -86,9 +86,9 @@ func FileServer(r chi.Router, path string, root http.FileSystem) {
 	}
 	path += "*"
 
-	r.Get(path, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	r.Get(path, func(w http.ResponseWriter, r *http.Request) {
 		fs.ServeHTTP(w, r)
-	}))
+	})
 }
 
 func InjectLogger(next http.Handler) http.Handler {