Update Europe Improved (#12955)

Updated map name and description

triplea_maps.yaml

@@ -2862,10 +2862,14 @@
   img: https://raw.githubusercontent.com/triplea-maps/tiberian_conquest_au/blob/master/preview.png
   description: |
     <br>Tiberian Conquest mod for TripleA, the Australian war theatre, by Fei.
-- mapName: europe_improved
+- mapName: Europe Improved
   mapCategory: EXPERIMENTAL
   url: https://github.com/triplea-maps/europe_improved/archive/master.zip
   version: 1
   img: https://raw.githubusercontent.com/triplea-maps/europe_improved/blob/master/preview.png
   description: |
     <br>Based on the boardgame: Axis & Allies - Europe (1999)
+    <br>
+    <br>This is an upgrade of the "Europe - Beta" module. Almost every bug has been fixed and the module now follows the rules much more closely.
+    <br>
+    <br><i>Made by VictoryFirst</i>