docs: list pipeline step 4e

The games index step came in with main. The installer samples test now reads step 7 in the list form the pipeline steps test holds.

tests/test_doc_pages.py

@@ -212,7 +212,7 @@ class InstallerSamplesSayWhatTheCodePrints(unittest.TestCase):
             "The tables of options, events, exit codes, keys and card markers", 1)[1][:600])
         self.assertIn("generate_installer_doc.py", next(
             line for line in _page("adding-a-platform.md").splitlines()
-            if line.startswith("7. ")))
+            if line.startswith("- 7 ")))
 
     def test_the_sandbox_looks_nothing_up(self):
         import socket

wiki/adding-a-platform.md

@@ -723,6 +723,7 @@ This executes in sequence, numbered as the run prints them (`STEP_LABELS` in
 - 4b `generate_pack.py --manifest`, install manifests
 - 4c `generate_pack.py --manifest-targets`, target manifests
 - 4d `bundled_only.py --strict`, copies only an emulator install provides
+- 4e `generate_games_index.py`, what the games-on-card mode reads under `install/games/`
 - 5 Consistency check: verify and the pack agree on counts and on the paths each archive holds
 - 6 Pack integrity: extract the ZIPs and check hashes per platform mode
 - 7 `generate_readme.py`, regenerate README and CONTRIBUTING, then `generate_installer_doc.py` rewrites the tables and run samples of `wiki/installer.md`