Forms/Docs: Add documentation for new ignoreRecord argument

packages/forms/docs/03-fields/03-select.md

@@ -204,6 +204,19 @@ Select::make('author_id')
     ->preload()
 ```
 
+### Excluding the current record
+
+When working with recursive relationships, you will likely want to remove the current record from the set of results.
+
+This can be easily be done using the `ignoreRecord` argument.
+
+```php
+use Filament\Forms\Components\Select;
+
+Select::make('parent_id')
+    ->relationship('parent', 'name', ignoreRecord: true)
+```
+
 ### Customizing the relationship query
 
 You may customize the database query that retrieves options using the third parameter of the `relationship()` method: