Update active_record_basics.md

typo here

book = Book.find_by(title: "Metaprogramming Ruby 2")
returns a list of records:SELECT "books".* FROM "books" WHERE "books"."author" = ? LIMIT ? [["author", "J.R.R. Tolkien"], ["LIMIT", 1]]

changed to:

"title" = ? LIMIT ? [["title", "Metaprogramming Ruby 2"]

Author: audiosupp

guides/source/active_record_basics.md

@@ -493,7 +493,7 @@ book = Book.find(42)
 The above resulting in this SQL:
 
 ```sql
-SELECT "books".* FROM "books" WHERE "books"."author" = ? LIMIT ?  [["author", "J.R.R. Tolkien"], ["LIMIT", 1]]
+SELECT "books".* FROM "books" WHERE "books"."title" = ? LIMIT ?  [["title", "Metaprogramming Ruby 2"], ["LIMIT", 1]]
 
 SELECT "books".* FROM "books" WHERE "books"."id" = ? LIMIT ?  [["id", 42], ["LIMIT", 1]]
 ```