DOCSP-37601 course and release notes (#2764)

* DOCSP-37601: release notes link, university course link fix

Author: Chris Cho

docs/index.txt

@@ -14,6 +14,7 @@ Laravel MongoDB
    :maxdepth: 1
 
    /quick-start
+   Release Notes <https://github.com/mongodb/laravel-mongodb/releases/>
    /retrieve
    /eloquent-models
    /query-builder

docs/quick-start.txt

@@ -33,7 +33,7 @@ read and write operations on the data.
 
    You can learn how to set up a local Laravel development environment
    and perform CRUD operations by viewing the
-   :mdbu-course:`Getting Started with Laravel and MongoDB </getting-started-with-laravel-and-mongodb>`
+   :mdbu-course:`Getting Started with Laravel and MongoDB </courses/getting-started-with-laravel-and-mongodb>`
    MongoDB University Learning Byte.
 
    If you prefer to connect to MongoDB by using the PHP Library driver without