Update facade docblocks

Author: taylorotwell

src/Illuminate/Support/Facades/Cache.php

@@ -38,6 +38,7 @@
  * @method static bool deleteMultiple(iterable $keys)
  * @method static bool clear()
  * @method static \Illuminate\Cache\TaggedCache tags(array|mixed $names)
+ * @method static string|null getName()
  * @method static bool supportsTags()
  * @method static int|null getDefaultCacheTime()
  * @method static \Illuminate\Cache\Repository setDefaultCacheTime(int|null $seconds)