docs: add cd conference-website in readme file (asyncapi#541)

Co-authored-by: Apple <[email protected]>

Author: zalabhavy

README.md

@@ -9,6 +9,11 @@ First, fork the repository and clone it.
 git clone https://github.com/<username>/conference-website.git
 ```
 
+Change Directory
+```bash
+cd conference-website
+```
+
 Install Dependencies
 ```bash
 npm install