Incorrect template URL in the php-silex README.mustache file

[GKurt]

Description

The Template URL provided in the php-silex README.mustache file generate a 404 error

Swagger-codegen version

Swagger declaration file content or url

Command line used for generation

Steps to reproduce

Open README.mustache file in the /swagger-codegen/modules/swagger-codegen/src/main/resources/php-silex/ folder and click on the Template URL in the last line.

/php-silex/

Related issues/PRs

Suggest a fix/enhancement

Change the Template URL: https://github.com/swagger-api/swagger-codegen/tree/master/modules/swagger-codegen/src/main/resources/silex/ to https://github.com/swagger-api/swagger-codegen/tree/master/modules/swagger-codegen/src/main/resources/php-silex/