[TASK] Remove the ViewHelper Source headline (#940)

It causes errors as it is not in a section etc

Author: linawolf

packages/typo3-docs-theme/resources/template/body/directive/viewhelper/viewhelper-source.html.twig

@@ -1,5 +1,3 @@
-<h2>Source code</h2>
-
 <p>
     Go to the source code of this ViewHelper:
     <a href="{{ node.gitHubLink }}">{{ node.shortClassName }}.php (GitHub)</a>.

tests/Integration/tests/viewhelper/viewhelper-all/expected/index.html

@@ -109,9 +109,7 @@ <h3>Split with a limit<a class="headerlink" href="#split-with-a-limit" data-bs-t
 
 
 
-            <h2>Source code</h2>
-
-<p>
+            <p>
     Go to the source code of this ViewHelper:
     <a href="https://github.com/TYPO3/Fluid/blob/main/src/ViewHelpers/SplitViewHelper.php">SplitViewHelper.php (GitHub)</a>.
 </p>
@@ -331,9 +329,7 @@ <h3>Split with a limit<a class="headerlink" href="#split-with-a-limit" data-bs-t
 
 
 
-            <h2>Source code</h2>
-
-<p>
+            <p>
     Go to the source code of this ViewHelper:
     <a href="https://github.com/TYPO3/Fluid/blob/main/src/ViewHelpers/SplitViewHelper.php">SplitViewHelper.php (GitHub)</a>.
 </p>
@@ -513,9 +509,7 @@ <h3>Custom default scheme<a class="headerlink" href="#custom-default-scheme" dat
 
 
 
-            <h2>Source code</h2>
-
-<p>
+            <p>
     Go to the source code of this ViewHelper:
     <a href="https://github.com/TYPO3/typo3/blob/main/typo3/sysext/fluid/Classes/ViewHelpers/Link/ExternalViewHelper.php">Link\ExternalViewHelper.php (GitHub)</a>.
 </p>
@@ -594,9 +588,7 @@ <h2>f:deprecated<a class="headerlink" href="#f-deprecated" data-bs-toggle="modal
 
 
 
-            <h2>Source code</h2>
-
-<p>
+            <p>
     Go to the source code of this ViewHelper:
     <a href="https://github.com/TYPO3/typo3/blob/main/typo3/sysext/fluid/Classes/ViewHelpers/DeprecatedViewHelper.php">DeprecatedViewHelper.php (GitHub)</a>.
 </p>
@@ -630,9 +622,7 @@ <h2>formvh:be.maximumFileSize<a class="headerlink" href="#formvh-be-maximumfiles
 
 
 
-            <h2>Source code</h2>
-
-<p>
+            <p>
     Go to the source code of this ViewHelper:
     <a href="https://github.com/TYPO3/typo3/blob/main/typo3/sysext/form/Classes/ViewHelpers/Be/MaximumFileSizeViewHelper.php">Be\MaximumFileSizeViewHelper.php (GitHub)</a>.
 </p>