Profilo: Fix website/.gitignore

Summary: Fixes the paths in `.gitignore` to be relative to `website`.

Reviewed By: zertosh

Differential Revision: D7285215

fbshipit-source-id: 19b3a7ecaa51b48abfbe8cb99d273a548cb03c9e

website/.gitignore

@@ -1,11 +1,8 @@
-node_modules
 .DS_Store
-lib/core/metadata.js
-lib/core/MetadataBlog.js
-website/translated_docs
-website/build/
-website/yarn.lock
-website/node_modules
 
-website/i18n/*
-!website/i18n/en.json
+/build
+/node_modules
+/translated_docs
+
+/i18n/*
+!/i18n/en.json