comment: fix typo

Author: samlaf

server/errors.go

@@ -27,7 +27,7 @@ func (me MetaError) Unwrap() error {
 
 func is400(err error) bool {
 	// proxy requests are super simple (clients basically only pass bytes), so the only 400 possible
-	// is passing a blog that's too big.
+	// is passing a blob that's too big.
 	//
 	// Any 400s returned by the disperser are due to formatting bugs in proxy code, for eg. badly
 	// IFFT'ing or encoding the blob, so we shouldn't return a 400 to the client.