Update README.md

Replacing the wrong host's port number 8080 into 80 in line 33 and 34

Signed-off-by: Ho Jin Le <jinleho@hotmail.com>

vuejs/README.md

@@ -30,8 +30,8 @@ services:
     - /project/node_modules
 ```
 The compose file defines an application with one service `vuejs`.
-When deploying the application, docker compose maps port 8080 of the web service container to port 8080 of the host as specified in the file.
-Make sure port 8080 on the host is not already being in use.
+When deploying the application, docker compose maps port 8080 of the web service container to port 80 of the host as specified in the file.
+Make sure port 80 on the host is not already being in use.
 
 ## Deploy with docker compose