Merge branch '305-clarify-spotlights' into 'master'

Add info text to spotlights page

Closes #305

See merge request !705

_layouts/spotlight-list.html

@@ -66,8 +66,15 @@
 
         <section>
 
-            <article class="salert alert-success">
-                This is a selection of Helmholtz Software Spotlights, which will be continuously expanded and updated. Stay tuned and learn more about great research software projects!
+            <article>
+                <p>
+                    The <b>Helmholtz Software Spotlights</b> present outstanding software products that are developed and maintained in Helmholtz research centres.
+                    We want to raise awareness for the general importance of research software in academia, and present software that appeals equally to research, citizens, industry and politics.
+                </p>
+                <p>
+                    Please note that this list will not be extended any further.
+                    Currently, we are preparing the <a href="https://helmholtz.software" target="_blank">Helmholtz Research Software Directory</a> to accommodate the Software Spotlights in the near future (Q1/2023), aiming to provide more features and a better user experience.
+                </p>
             </article>
 
             <article class="spotlights-filter">