fix guide link in usage examples landing page (#85)

Author: Chris Cho

source/usage-examples.txt

@@ -38,8 +38,8 @@ These examples use the :atlas:`MongoDB Atlas sample data <sample-data>`
 database. You can use this sample data on the free tier
 of MongoDB Atlas by following the :atlas:`Get Started with Atlas
 <getting-started/#atlas-getting-started>` guide or you can
-:manual:`import the sample dataset into a local MongoDB instance
-</import/>`.
+:guides:`import the sample dataset into a local MongoDB instance
+</server/import>`.
 
 Once you have imported the dataset, you can copy and paste a usage
 example into your development environment of choice. You can follow the