Add license information for TP modules in Qt modules overview

Fixes: QTBUG-77757
Change-Id: Iba7214b4c4b0a4288fd12dde7c807c0ad39b19da
Reviewed-by: Kai Koehne <kai.koehne@qt.io>

doc/src/qtmodules.qdoc

@@ -431,6 +431,7 @@
     \section1 Technology Preview Features
 
     The following features are still in development but are available as technology previews.
+    They are licensed under Commercial Licenses, or GNU General Public License v3.
 
     \table 80%
     \header
@@ -441,7 +442,7 @@
         \li A platform target to compile Qt applications for the web browsers using WebAssembly.
     \row
         \li \l{Qt Lottie Animation} (Technology Preview)
-        \li  A QML API for rendering graphics and animations in JSON format,
+        \li A QML API for rendering graphics and animations in JSON format,
             exported by the \l Bodymovin plugin for Adobe® After Effects.
     \endtable