treewide: fix redirected urls (run 3)

Related:
 - 9fc5e7e473
 - 593e11fd94
 - 508ae42a0f

Since the last time I ran this script, the Repology API changed, so I had to
adapt the script used in the previous PR. The new API should be more robust, so
overall this is a positive (no more grepping the error messages for our relevant
data but just a nice json structure).

Here's the new script I used:

```sh
curl https://repology.org/api/v1/repository/nix_unstable/problems \
   | jq -r '.[] | select(.type == "homepage_permanent_https_redirect") | .data | "s@\(.url)@\(.target)@"' \
   | sort | uniq | tee script.sed
find -name '*.nix' | xargs -P4 -- sed -f script.sed -i
```

I will also add this script to `maintainers/scripts`.

pkgs/games/instead/default.nix

@@ -3,7 +3,7 @@
 let
   version = "3.3.2";
 
-  # I took several games at random from http://instead.syscall.ru/games/
+  # I took several games at random from https://instead.syscall.ru/games/
   games = [
     (fetchurl {
       url = "http://instead-games.googlecode.com/files/instead-apple-day-1.2.zip";
@@ -64,7 +64,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Simple text adventure interpreter for Unix and Windows";
-    homepage = "http://instead.syscall.ru/";
+    homepage = "https://instead.syscall.ru/";
     license = stdenv.lib.licenses.gpl2;
     platforms = with stdenv.lib.platforms; linux;
     maintainers = with maintainers; [ pSub ];