Update page.mdx

Author: shahednasser

www/apps/book/app/learn/installation/page.mdx

@@ -37,7 +37,7 @@ Where `my-medusa-store` is the name of the project's directory and PostgreSQL da
 
 <Note>
 
-To customize the default setup behavior, such as specify a database URL, refer to the [create-medusa-app reference](!resources!/create-medusa-app).
+To customize the default installation behavior, such as specify a database URL, refer to the [create-medusa-app reference](!resources!/create-medusa-app).
 
 </Note>