(fix): Wordings and alt tags

Author: ArneTR

layouts/products/energy-id.html

@@ -18,7 +18,7 @@
 
       <div class="clear"></div>
 
-      <h2>Software Database</h3>
+      <h2>Software Database</h2>
       <hr>
 
       <div id="hero-filter">
@@ -80,10 +80,9 @@ <h4 class="ui dividing header sidebar-heading">
       </div>
       <h4>Credit / Funding</h4>
       <div>
-          <p>The Energy-ID Database frontend as well as supplementatry tools that have led to the creation of the
-          database which was funded by the Deutsche Bundesstiftung Umwelt (DBU) under the number <a href="https://www.dbu.de/projektdatenbank/39703-01/">DBU Project 39703/01</a></p>.
+          <p>The Energy-ID Database frontend and parts of the content was funded by the Deutsche Bundesstiftung Umwelt (DBU) under the number <a href="https://www.dbu.de/projektdatenbank/39703-01/">DBU Project 39703/01</a></p>.
           <p>After the creation of the Energy-ID Database also contributions from volunteers, own work without funding and other prior resarch work have been added to the dabase and go beyond the scope of the research project.</p>
-          <p><img src="/img/funding/dbu_sponsor_badge.webp"></p>
+          <p><img src="/img/funding/dbu_sponsor_badge.webp" alt="Deutsche Bundesstiftung Umwelt (DBU) sponsor badge"></p>
           <p>We are super grateful for this funding and are blessed to have been granted the opportunity to create this data repository for the greater software community!</p>
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     </div>