Merge pull request #150 from sikender/fix-security-doc

docs(@nestjs): Fix typo in csurf installation

src/app/homepage/pages/techniques/security/security.component.html

@@ -43,7 +43,7 @@ <h4>CSRF</h4>
     <a href="https://github.com/expressjs/csurf" target="blank">csurf</a> package. Firstly, install the required package:
   </p>
   <pre><code class="language-bash">
-$ npm i --save helmet</code></pre>
+$ npm i --save csurf</code></pre>
   <p>
     Once the installation is completed, apply it as a global middleware.
   </p>