refactor: remove non exists title sort criteria

docs/develop/graphql/search/index.md

@@ -108,8 +108,7 @@ The following sorting criteria are possible:
 
 | <div style="width:8em">Search criteria</div> | Description                                                                                                                                                                                                                                                    |
 | -------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `name`                                       | This is sorted by the name of the article. In some cases, the name is preceded by a numerical prefix to achieve the desired sorting in the CMS and is therefore not always identical to the headline.                                                          |
-| `headline`                                   | Sort by the title of the article.                                                                                                                                                                                                                              |
+| `name`                                       | This is sorted by the name of the article. In some cases, the name is preceded by a numerical prefix to achieve the desired sorting in the CMS                                                                                                                 |
 | `date`                                       | In many cases, an editorial date can be set for the article that is used here. Otherwise it is the last modification date of the article.                                                                                                                      |
 | `natural`                                    | In most cases, a sort field is written to the index, which should describe the natural sorting of the entry. For normal articles, this is usually the heading. For news or events, however, it is the date, for example. This sort field is used in this case. |
 | `score`                                      | The score is determined during the search and describes how closely the individual hits match the search query. This sorting is useful for full-text searches in order to obtain the most accurate results first. Here it is sorted according to relevance.    |