Adds missing documentation regarding the combobox's selection mode

headless/src/jsMain/kotlin/dev/fritz2/headless/components/combobox.kt

@@ -318,10 +318,11 @@ class Combobox<E : HTMLElement, T>(tag: Tag<E>, id: String?) : Tag<E> by tag, Op
      * match in the combobox's input or not.
      *
      * The following strategies can be configured:
-     * - [autoSelectMatch()][SelectionStrategyProperty.autoSelectMatch] (__default__): Automatically select elements if
+     * - [autoSelectMatch()][SelectionStrategyProperty.autoSelectMatch]: Automatically select elements if
      *   they are an exact match
-     * - [manual()][SelectionStrategyProperty.manual]: Render exact matches as part of the regular dropdown for the user
-     *   to manually select. If no selection is made, the input is reset to the last selected value.
+     * - [manual()][SelectionStrategyProperty.manual] (__default__): Render exact matches as part of the regular
+     *   dropdown for the user to manually select. If no selection is made, the input is reset to the last selected
+     *   value.
      *
      * Example:
      * ```kotlin

www/src/pages/headless/combobox.md

@@ -217,6 +217,27 @@ combobox {
 }
 ```
 
+## Auto-Selecting Items
+
+By default, the user needs to manually select an item for it to be accepted as the combo box's value.
+It can, however, also be configured to automatically select matching items for a query via the `selectionStrategy`
+property.
+
+The following modes are offered:
+
+| Configuration method  | Description                                 |
+|-----------------------|---------------------------------------------|
+| `autoSelectMatches()` | Matching items are automatically selected   |
+| `manual()`            | Matching items need to be selected manually |
+
+```kotlin
+combobox {
+    selectionStrategy.autoSelectMatches()
+    // OR
+    selectionStrategy.manual()
+}
+```
+
 ## Transitions
 
 Showing and hiding the selection list can be easily animated with the help of `transition`: