Remove all dots at end of descriptions

Specially crafted for @JagaJaga

    find pkgs -name "*.nix" -exec \
      sed -e 's|\(description.*\)\.";|\1";|g' -i {} \;

pkgs/development/compilers/coreclr/default.nix

@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = http://dotnet.github.io/core/;
-    description = ".NET is a general purpose development platform.";
+    description = ".NET is a general purpose development platform";
     platforms = [ "x86_64-linux" ];
     maintainers = with stdenv.lib.maintainers; [ obadz ];
     license = stdenv.lib.licenses.mit;