Update content/first-steps.md

Author: kamilmysliwiec

content/first-steps.md

@@ -21,7 +21,7 @@ $ npm i -g @nestjs/cli
 $ nest new project-name
 ```
 
-The `project-name/` directory will be created, node modules and a few other boilerplate files will be installed, and a `src/` directory will be created and populated with several core files.
+The `project-name` directory will be created, node modules and a few other boilerplate files will be installed, and a `src/` directory will be created and populated with several core files.
 
 <div class="file-tree">
   <div class="item">src</div>