[HUD] Update README with info about getting access to Vercel (#6098)

As in title

Author: clee2000

torchci/.env.example

@@ -1,5 +1,6 @@
-# Copy this file to .env.local and add keys based on the instructions.
-# Ask @suo if you don't know how to get any of these things.
+# Copy this file to .env.local and add keys based on the instructions.  All of
+# these keys can be found on Vercel.  Please see the README about getting access
+# to Vercel.
 
 # Rockset API key for talking to our data backend. You can generate one from the
 # Rockset console (https://console.rockset.com/apikeys).

torchci/README.md

@@ -6,7 +6,11 @@ Here is a checklist of all the different services used by the HUD. Ask
 @janeyx99 or @suo for help getting access to these services.
 
 - [Rockset](https://rockset.com/): primary data and metrics backend.
-- [Vercel](https://vercel.com/): hosting the website.
+- [Vercel](https://vercel.com/): hosting the website. If you are a metamate,
+  make a post [like
+  this](https://fb.workplace.com/groups/osssupport/posts/27574509675504286) in the
+  [Open Source - Support](https://fb.workplace.com/groups/773769332671684) group
+  to get access to Vercel.
 - [Sematext](https://sematext.com/): log drain for our Vercel instance.
 - [AWS](http://aws.com/): data pipelines for populating Rockset, Lambda, S3, etc.