Update README.md

Fix clone path for this error. 

`The authenticity of host 'github.com (UP Address)' can't be established.
RSA key fingerprint is SHA256:********.`

Author: mcantonbul

README.md

@@ -13,7 +13,7 @@
 
 Clone the repository
 
-    git clone git@github.com:lujakob/nestjs-realworld-example-app.git
+    git clone https://github.com/lujakob/nestjs-realworld-example-app.git
 
 Switch to the repo folder
 
@@ -135,4 +135,4 @@ This applications uses JSON Web Token (JWT) to handle authentication. The token
 
 # Swagger API docs
 
-This example repo uses the NestJS swagger module for API documentation. [NestJS Swagger](https://github.com/nestjs/swagger) - [www.swagger.io](https://swagger.io/)        
+This example repo uses the NestJS swagger module for API documentation. [NestJS Swagger](https://github.com/nestjs/swagger) - [www.swagger.io](https://swagger.io/)