[8.x] Add documentation for lazyByIdDesc method (#7488)

* Add missing semi-colon

* Document `lazyByIdDesc` method

* Update eloquent.md

* Update queries.md

Co-authored-by: Taylor Otwell <[email protected]>

Author: bryceandy

eloquent.md

@@ -388,6 +388,8 @@ Flight::where('departed', true)
     ->each->update(['departed' => false]);
 ```
 
+You may filter the results based on the descending order of the `id` using the `lazyByIdDesc` method. 
+
 <a name="cursors"></a>
 ### Cursors
 
@@ -948,7 +950,7 @@ If you wish to exclude certain models from being pruned while pruning all other
 
     $schedule->command('model:prune', [
         '--except' => [Address::class, Flight::class],
-    ])->daily()
+    ])->daily();
 
 You may test your `prunable` query by executing the `model:prune` command with the `--pretend` option. When pretending, the `model:prune` command will simply report how many records would be pruned if the command were to actually run:
 

queries.md

@@ -168,7 +168,7 @@ DB::table('users')->orderBy('id')->lazy()->each(function ($user) {
 });
 ```
 
-Once again, if you plan to update the retrieved records while iterating over them, it is best to use the `lazyById` method instead. This method will automatically paginate the results based on the record's primary key:
+Once again, if you plan to update the retrieved records while iterating over them, it is best to use the `lazyById` or `lazyByIdDesc` methods instead. These methods will automatically paginate the results based on the record's primary key:
 
 ```php
 DB::table('users')->where('active', false)