fix typo

Author: luizbills

public/about.html

@@ -690,7 +690,7 @@ <h2><a id="engine-api">Engine API</a></h2>
 // Update or reset the palette color
 // example: pal(['#000', '#FFF']) is a 1-bit color palette
 // example: pal() resets the default color palette
-pal(index: string[]): void
+pal(colors: string[]): void
 
 // shutdown the engine
 // also emits the "quit" event

public/sw.js

@@ -1,5 +1,5 @@
 const cacheName = "luizbills.litecanvas-editor-v1";
-const version = "2.82.0";
+const version = "2.82.1";
 
 const precacheResources = [
   "/",