Fix grammar in configuration.md

configuration.md

@@ -21,7 +21,7 @@ It is often helpful to have different configuration values based on the environm
 
 To make this a cinch, Laravel utilizes the [DotEnv](https://github.com/vlucas/phpdotenv) PHP library by Vance Lucas. In a fresh Laravel installation, the root directory of your application will contain a `.env.example` file. If you install Laravel via Composer, this file will automatically be renamed to `.env`. Otherwise, you should rename the file manually.
 
-Your `.env` file should not be committed to your application's source control, since each developer / server using your application could require a different environment configuration. Furthermore, this would be a security risk in the event an intruder gain access to your source control repository, since any sensitive credentials would get exposed.
+Your `.env` file should not be committed to your application's source control, since each developer / server using your application could require a different environment configuration. Furthermore, this would be a security risk in the event an intruder gains access to your source control repository, since any sensitive credentials would get exposed.
 
 If you are developing with a team, you may wish to continue including a `.env.example` file with your application. By putting place-holder values in the example configuration file, other developers on your team can clearly see which environment variables are needed to run your application. You may also create a `.env.testing` file. This file will override the `.env` file when running PHPUnit tests or executing Artisan commands with the `--env=testing` option.