Add missing redirects.

Author: nikoshell

astro.config.mjs

@@ -99,9 +99,12 @@ export default defineConfig({
     "/planning/": "https://forms.gle/riw6CvML8ck94A4V9",
     "/reviewers/": "https://forms.gle/4GTJjwZ1nHBGetM18",
     "/speaker/savannah-ostrowski": "/speaker/savannah-bailey",
-    "/rust-summit": "/session//rust-summit",
+    "/rust-summit": "/session/rust-summit",
     "/c-api-summit": "/session/c-api-summit",
     "/wasm-summit": "/session/webassembly-summit",
+    "/programme/rust-summit": "/session/rust-summit",
+    "/programme/c-api-summit": "/session/c-api-summit",
+    "/programme/wasm-summit": "/session/webassembly-summit",
   },
   integrations: [
     mdx(),