treewide: update meta.description to fit the guidelines

pkgs/games/airshipper/default.nix

···
   cargoTestFlags = [ "--package" "airshipper" ];
 
   meta = with lib; {
-    description = "Provides automatic updates for the voxel RPG Veloren.";
+    description = "Provides automatic updates for the voxel RPG Veloren";
     homepage = "https://www.veloren.net";
     license = licenses.gpl3;
     maintainers = with maintainers; [ yusdacra ];

pkgs/games/black-hole-solver/default.nix

···
   pname = "black-hole-solver";
   version = "1.12.0";
 
-  meta = with lib; {
-    homepage = "https://www.shlomifish.org/open-source/projects/black-hole-solitaire-solver/";
-    description = "A solver for Solitaire variants Golf, Black Hole, and All in a Row.";
-    license = licenses.mit;
-  };
-
   src = fetchurl {
     url = "https://fc-solve.shlomifish.org/downloads/fc-solve/${pname}-${version}.tar.xz";
     sha256 = "sha256-0y8yU291cykliPQbsNha5C1WE3bCGNxKtrrf5JBKN6c=";
···
     patchShebangs ./scripts
   '';
 
+  meta = with lib; {
+    description = "A solver for Solitaire variants Golf, Black Hole, and All in a Row";
+    homepage = "https://www.shlomifish.org/open-source/projects/black-hole-solitaire-solver/";
+    license = licenses.mit;
+  };
 }

pkgs/games/corsix-th/default.nix

···
   '';
 
   meta = with lib; {
-    description = "A reimplementation of the 1997 Bullfrog business sim Theme Hospital.";
+    description = "A reimplementation of the 1997 Bullfrog business sim Theme Hospital";
     homepage = "https://corsixth.com/";
     license = licenses.mit;
     maintainers = with maintainers; [ hughobrien ];

pkgs/games/ddnet/default.nix

···
   '';
 
   meta = with lib; {
-    description = "A Teeworlds modification with a unique cooperative gameplay.";
+    description = "A Teeworlds modification with a unique cooperative gameplay";
     longDescription = ''
       DDraceNetwork (DDNet) is an actively maintained version of DDRace,
       a Teeworlds modification with a unique cooperative gameplay.

pkgs/games/dwarf-fortress/twbt/default.nix

···
   '';
 
   meta = with lib; {
-    description = "A plugin for Dwarf Fortress / DFHack that improves various aspects the game interface.";
+    description = "A plugin for Dwarf Fortress / DFHack that improves various aspects the game interface";
     maintainers = with maintainers; [ Baughn numinit ];
     license = licenses.mit;
     platforms = platforms.linux;

pkgs/games/marble-marcher-ce/default.nix

···
   ];
 
   meta = with lib; {
-    description = "A fractal physics game.";
-    longDescription = "A community-developed version of the original Marble Marcher - a fractal physics game.";
+    description = "A community-developed version of the original Marble Marcher - a fractal physics game";
     homepage = "https://michaelmoroz.itch.io/mmce";
     license = with licenses; [
       gpl2Plus # Code

pkgs/games/openra/build-engine.nix

···
   '';
 
   meta = with lib; {
-    description = "Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert. ${engine.build} version.";
+    description = "Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert. ${engine.build} version";
     homepage = "https://www.openra.net/";
     license = licenses.gpl3;
     maintainers = with maintainers; [ mdarocha ];

pkgs/games/pegasus-frontend/default.nix

···
   ];
 
   meta = with lib; {
-    description = "A cross platform, customizable graphical frontend for launching emulators and managing your game collection.";
+    description = "A cross platform, customizable graphical frontend for launching emulators and managing your game collection";
     homepage = "https://pegasus-frontend.org/";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ tengkuizdihar ];

pkgs/games/theforceengine/default.nix

···
   '';
 
   meta = with lib; {
-    description = "Modern \"Jedi Engine\" replacement supporting Dark Forces, mods, and in the future Outlaws.";
+    description = "Modern \"Jedi Engine\" replacement supporting Dark Forces, mods, and in the future, Outlaws";
     homepage = "https://theforceengine.github.io";
     license = licenses.gpl2Only;
     maintainers = with maintainers; [ devusb ];

pkgs/games/uchess/default.nix

···
   '';
 
   meta = with lib; {
-    description = "Play chess against UCI engines in your terminal.";
+    description = "Play chess against UCI engines in your terminal";
     homepage = "https://tmountain.github.io/uchess/";
     maintainers = with maintainers; [ tmountain ];
     license = licenses.mit;

pkgs/games/xgalaga++/default.nix

···
 
   meta = with lib; {
     homepage = "https://marc.mongenet.ch/OSS/XGalaga/";
-    description = "XGalaga++ is a classic single screen vertical shoot ’em up. It is inspired by XGalaga and reuses most of its sprites.";
+    description = "XGalaga++ is a classic single screen vertical shoot ’em up. It is inspired by XGalaga and reuses most of its sprites";
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
   };