Maybe actually fix metadata

data/io.github.leolost2605.gradebook.metainfo.xml

@@ -10,8 +10,15 @@
 
   <description>
     <p>
-      A simple tool to keep track of your grades! It supports numerical grading systems as well as percentage grades.
+      Gradebook is a simple tool that helps you keep track of your grades. This way you always know how you are doing in your courses.
     </p>
+    <p>Features:</p>
+      <ul>
+        <li>Support for numerical and percentage systems</li>
+        <li>Assign your grades to categories with different weighting</li>
+        <li>Add notes to your grades so that you later know how you could improve</li>
+        <li>Your average is calculated automatically taking the weighting of the different categories into account</li>
+      </ul>
   </description>
 
   <developer_name>Leonhard Kargl</developer_name>
@@ -39,7 +46,7 @@
   <releases>
     <release version="1.2" date="2023-12-24" urgency="medium">
       <description>
-        <p>This release brings a completely refreshed UI, updating it to the latest GNOME 45 HIG. Huge thanks to skøldis for making this possible! Since this is such a massive change be sure to report any issues you discover at https://github.com/leolost2605/Gradebook/issues</p>
+        <p>This release brings a completely refreshed UI, updating it to the latest GNOME 45 HIG. Huge thanks to skøldis ([email protected]) for making this possible! Since this is such a massive change be sure to report any issues you discover.</p>
         <p>More improvements:</p>
         <ul>
           <li>Lots of backend improvements, so be on the lookout for new features coming soon!</li>