docs(adapter): match Fauna index name with implementation(#2360)

* Update Fauna Adapter 

- added one-liner to explain how to use the setup scripts inside of the Fauna dashboard
- updated the `verification_request_by_token` index name to match what is expected inside of the SDK which is `verification_request_by_token_and_identifier`

* Update Typo

Co-authored-by: Balázs Orbán <[email protected]>

Co-authored-by: Balázs Orbán <[email protected]>

Author: jamesqquick

www/docs/adapters/fauna.md

@@ -49,6 +49,8 @@ export default NextAuth({
 
 ## Schema
 
+Run the following commands inside of the `Shell` tab in the Fauna dashboard to setup the appropriate collections and indexes.
+
 ```javascript
 CreateCollection({ name: "accounts" })
 CreateCollection({ name: "sessions" })
@@ -76,7 +78,7 @@ CreateIndex({
   terms: [{ field: ["data", "email"] }],
 })
 CreateIndex({
-  name: "verification_request_by_token",
+  name: "verification_request_by_token_and_identifier",
   source: Collection("verification_requests"),
   unique: true,
   terms: [{ field: ["data", "token"] }, { field: ["data", "identifier"] }],