fix(doc): remove period from description

pkgs/by-name/di/diagon/package.nix

@@ -64,7 +64,7 @@ in stdenv.mkDerivation rec {
   ];
 
   meta = src.meta // {
-    description = "An interactive interpreter that transforms markdown-style expression into an ascii-art representation.";
+    description = "An interactive interpreter that transforms markdown-style expression into an ascii-art representation";
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.petertrotman ];
     mainProgram = "diagon";