Fix tense in background migration warning

doc/development/database/background_migrations.md

@@ -8,7 +8,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 WARNING:
 Background migrations are strongly discouraged in favor of the new [batched background migrations framework](../batched_background_migrations.md).
-Please check that documentation and determine if that framework will suit your needs and fall back
+Please check that documentation and determine if that framework suits your needs and fall back
 to these only if required.
 
 Background migrations should be used to perform data migrations whenever a