fix base url for public sitemap

Summary:
Update the base URL used in the sitemap that gets pushed to the public site, to ensure search engines / crawlers pick up the right updates.

Already pushed downstream on GitHub (hhvm/user-documentation):
https://docs.hhvm.com/sitemap.xml -->
 {F1984714430}

Reviewed By: francesco-zappa-nardelli

Differential Revision: D90984952

fbshipit-source-id: 4a815abbfb52087039d993576e7385e7a12c1127

Author: tlil

hphp/hack/website/.gitignore

@@ -1,20 +1,25 @@
-# Dependencies
-/node_modules
-
-# Production
-/build
-
-# Generated files
-.docusaurus
-.cache-loader
-
-# Misc
+.commit-template
+*.swp
+*.php.diff
+*.php.out
+*.php.type-errors.diff
+*.php.type-errors.out
+*.hack.diff
+*.hack.out
+*.hack.type-errors.diff
+*.hack.type-errors.out
+*.css.map
+*.stdout
+*.stderr
+.*.hhast.*cache
+.sass-cache
+.bundle
 .DS_Store
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
-
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
+*~
+*.orig
+*.rej
+.var/
+sdoc-cache.json
+.docusaurus/
+build/
+node_modules/

hphp/hack/website/docusaurus.config.js

@@ -11,7 +11,7 @@ const darkCodeTheme = require('prism-react-renderer').themes.vsDark;
 (module.exports = {
   title: 'Hack & HHVM Documentation',
   tagline: 'Moving fast with high-performance Hack, a programming language for building reliable websites at epic scale',
-  url: 'https://internalfb.com',
+  url: 'https://docs.hhvm.com',
   baseUrl: process.env.DOCUSAURUS_BASE_URL || '/',
   onBrokenLinks: 'warn', // TODO: change back to 'throw' ones apis/* (and hsl/*) have been populated
   trailingSlash: true,