Add license headers to new shaders; stop doc bot complaining

Change-Id: I36862f842ece2432733036da18f2ab1cd663a4e9
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

src/quick/scenegraph/shaders_ng/shapestroke_wireframe.frag

@@ -1,3 +1,6 @@
+// Copyright (C) 2025 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
 #version 440
 
 layout(location = 0) in vec3 barycentric;

src/quick/scenegraph/shaders_ng/shapestroke_wireframe.vert

@@ -1,3 +1,6 @@
+// Copyright (C) 2025 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
 #version 440
 
 layout(location = 0) in vec4 vertexCoord;

src/quickshapes/qquickshapecurverenderer.cpp

@@ -28,8 +28,8 @@ namespace {
 
 /*! \internal
     Choice of vertex shader to use for the wireframe node:
-    \li \c SimpleWFT is for when vertices are already in logical coordinates
-    \li \c StrokeWFT chooses the stroke shader, which moves vertices according to the stroke width uniform
+    * \c SimpleWFT is for when vertices are already in logical coordinates
+    * \c StrokeWFT chooses the stroke shader, which moves vertices according to the stroke width uniform
 */
 enum WireFrameType { SimpleWFT, StrokeWFT };