Refactor: fixed spelling in migrate-mongo-config

Author: mwenko

samples/migrate-mongo-config.js

@@ -25,7 +25,7 @@ const config = {
   // The file extension to create migrations and search for in migration dir 
   migrationFileExtension: ".js",
 
-  // Enable the algorithm to create a checksum of the file contents and use that in the comparison to determin
+  // Enable the algorithm to create a checksum of the file contents and use that in the comparison to determine
   // if the file should be run.  Requires that scripts are coded to be run multiple times.
   useFileHash: false
 };