[TASK] Improve search results for confvals etc (#769)

Sections without headers are ignored so add a hidden header for now

Author: linawolf

Documentation-rendertest/ViewHelpers/Index.rst

@@ -0,0 +1,36 @@
+===========
+ViewHelpers
+===========
+
+See :typo3:viewhelper:`typo3fluid-fluid-viewhelpers-splitviewhelper` or
+:typo3:viewhelper-argument:`typo3-cms-fluid-viewhelpers-link-externalviewhelper-uri`.
+
+f:split
+=======
+
+..  typo3:viewhelper:: split
+    :source: resources/global_viewhelpers_demo.json
+
+..  typo3:viewhelper:: split
+    :source: resources/global_viewhelpers_demo.json
+    :sortBy: json
+    :noindex:
+
+f:link.external
+===============
+
+..  typo3:viewhelper:: link.external
+    :source: resources/global_viewhelpers_demo.json
+
+f:deprecated
+============
+
+..  typo3:viewhelper:: deprecated
+    :source: resources/global_viewhelpers_demo.json
+
+
+formvh:be.maximumFileSize
+=========================
+
+..  typo3:viewhelper:: be.maximumFileSize
+    :source: resources/Form.json