chore: update .gitignore for documentation

.gitignore

@@ -55,10 +55,8 @@
 !/docs/**/*.md
 !/docs/.vitepress/config.mts
 !/docs/statements/**/*
-!/docs/examples/**/*.data
-!/docs/examples/**/*.keys
-!/docs/examples/**/*.zen
-!/docs/examples/license_example.sh
+!/docs/examples/index.mjs
+!/examples/**/*
 !/README.md
 
 node_modules