Update dbinit.rst

"require" -> "requires"

docs/tutorial/dbinit.rst

@@ -16,7 +16,7 @@ Such a schema can be created by piping the `schema.sql` file into the
 
 The downside of this is that it requires the sqlite3 command to be
 installed which is not necessarily the case on every system.  This also
-require that we provide the path to the database  which can introduce
+requires that we provide the path to the database  which can introduce
 errors.  It's a good idea to add a function that initializes the database
 for you to the application.