Fix 'autograde-submission:create-successful' string

moodle-assignsubmission-autograde/lang/en/assignsubmission_autograde.php

@@ -58,7 +58,7 @@ $string['autograde:http-0']   = 'Autograde service not found. Please contact the
 $string['autograde:http-404'] = "The call to the autograde api resulted in a NOT-FOUND. An existing service is running on this server but it's not autograde. Verify that the autograde service URL is correct.";
 $string['autograde-assignment:create-successful'] = 'Successfully created the assignment in the autograde service.';
 $string['autograde-assignment:delete-successful'] = 'Successfully deleted the assignment from the autograde service.';
-$string['autograde-submission:create-successful'] = 'Your submission was successfully uploaded  for grading. Your grade you will available to you upon the completion of the grading process.';
+$string['autograde-submission:create-successful'] = 'Your submission was successfully uploaded. Your grade will be available upon completion of the grading process.';
 $string['settings-autograde:http-200'] = 'The credentials were correctly updated in the service.';
 $string['settings-autograde:http-403'] = 'The provided autograde access token is not valid.';
 $string['submit-autograde:http-403'] = 'Your submission was not scheduled for grading. Please contact your teacher or one of the TAs to fix the issue.';