docs: add astro-stan as a contributor for code (#40128)

Adds @astro-stan as a contributor for code.

This was requested by PrivatePuffin [in this
comment](https://github.com/trueforge-org/truecharts/pull/40000#issuecomment-3342690404)

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -1,6 +1,6 @@
 {
-  "projectName": "public",
-  "projectOwner": "truecharts",
+  "projectName": "truecharts",
+  "projectOwner": "trueforge-org",
   "repoType": "github",
   "repoHost": "https://github.com",
   "files": [
@@ -2532,6 +2532,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "astro-stan",
+      "name": "astro-stan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/36302090?v=4",
+      "profile": "https://github.com/astro-stan",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,