Update facade docblocks

Author: taylorotwell

src/Illuminate/Support/Facades/Pipeline.php

@@ -14,6 +14,10 @@
  * @method static \Illuminate\Pipeline\Pipeline setContainer(\Illuminate\Contracts\Container\Container $container)
  * @method static \Illuminate\Pipeline\Pipeline|mixed when(\Closure|mixed|null $value = null, callable|null $callback = null, callable|null $default = null)
  * @method static \Illuminate\Pipeline\Pipeline|mixed unless(\Closure|mixed|null $value = null, callable|null $callback = null, callable|null $default = null)
+ * @method static void macro(string $name, object|callable $macro)
+ * @method static void mixin(object $mixin, bool $replace = true)
+ * @method static bool hasMacro(string $name)
+ * @method static void flushMacros()
  *
  * @see \Illuminate\Pipeline\Pipeline
  */