Merge pull request #132

Updated include-lines and added `collapsed-title` in presets documentation

Author: andrey-helldar

docs/topics/presets.topic

@@ -46,39 +46,43 @@
             <code-block
                     lang="php"
                     src="../../src/Presets/Items/InstagramFeedItem.php"
-                    include-lines="13-"
+                    include-lines="5-"
                     collapsible="true"
                     default-state="collapsed"
+                    collapsed-title="class InstagramFeedItem extends FeedItem"
             />
         </chapter>
 
         <chapter title="Yandex" id="yandex">
             <code-block
                     lang="php"
                     src="../../src/Presets/Items/YandexFeedItem.php"
-                    include-lines="13-"
+                    include-lines="5-"
                     collapsible="true"
                     default-state="collapsed"
+                    collapsed-title="class YandexFeedItem extends FeedItem"
             />
         </chapter>
 
         <chapter title="Sitemap" id="sitemap">
             <code-block
                     lang="php"
                     src="../../src/Presets/Items/SitemapFeedItem.php"
-                    include-lines="11-"
+                    include-lines="5-"
                     collapsible="true"
                     default-state="collapsed"
+                    collapsed-title="class SitemapFeedItem extends FeedItem"
             />
         </chapter>
 
         <chapter title="RSS" id="rss">
             <code-block
                     lang="php"
                     src="../../src/Presets/Items/RssFeedItem.php"
-                    include-lines="14-"
+                    include-lines="5-"
                     collapsible="true"
                     default-state="collapsed"
+                    collapsed-title="class RssFeedItem extends FeedItem"
             />
         </chapter>
     </chapter>