Update README.md (#65)

Author: sy-records

README.md

@@ -6,12 +6,12 @@ This is a skeleton application using the Hyperf framework. This application is m
 
 Hyperf has some requirements for the system environment, it can only run under Linux and Mac environment, but due to the development of Docker virtualization technology, Docker for Windows can also be used as the running environment under Windows.
 
-The various versions of Dockerfile have been prepared for you in the [hyperf\hyperf-docker](https://github.com/hyperf/hyperf-docker) project, or directly based on the already built [hyperf\hyperf](https://hub.docker.com/r/hyperf/hyperf) Image to run.
+The various versions of Dockerfile have been prepared for you in the [hyperf/hyperf-docker](https://github.com/hyperf/hyperf-docker) project, or directly based on the already built [hyperf/hyperf](https://hub.docker.com/r/hyperf/hyperf) Image to run.
 
 When you don't want to use Docker as the basis for your running environment, you need to make sure that your operating environment meets the following requirements:  
 
- - PHP >= 7.2
- - Swoole PHP extension >= 4.4，and Disabled `Short Name`
+ - PHP >= 7.3
+ - Swoole PHP extension >= 4.5，and Disabled `Short Name`
  - OpenSSL PHP extension
  - JSON PHP extension
  - PDO PHP extension （If you need to use MySQL Client）