chore: update readme (#3011)

readme-cn.md

@@ -23,7 +23,7 @@
 >
 > `GOPROXY=https://goproxy.cn/,direct go install github.com/zeromicro/go-zero/tools/goctl@latest`
 >
-> `goctl migrate —verbose —version v1.4.3`
+> `goctl migrate —verbose —version v1.5.0`
 
 ## 0. go-zero 介绍
 
@@ -119,10 +119,7 @@ GO111MODULE=on GOPROXY=https://goproxy.cn/,direct go get -u github.com/zeromicro
     `goctl` 读作 `go control`，不要读成 `go C-T-L`。`goctl` 的意思是不要被代码控制，而是要去控制它。其中的 `go` 不是指 `golang`。在设计 `goctl` 之初，我就希望通过 `工具` 来解放我们的双手👈
 
     ```shell
-    # Go 1.15 及之前版本
+    # Go
-    GO111MODULE=on GOPROXY=https://goproxy.cn/,direct go get -u github.com/zeromicro/go-zero/tools/goctl@latest
-
-    # Go 1.16 及以后版本
     GOPROXY=https://goproxy.cn/,direct go install github.com/zeromicro/go-zero/tools/goctl@latest
     
     # For Mac

readme.md

@@ -111,7 +111,7 @@ go install github.com/zeromicro/go-zero/tools/goctl@latest
 ```
 
 ```shell
-goctl migrate —verbose —version v1.4.3
+goctl migrate —verbose —version v1.5.0
 ```
 
 ##  Quick Start
@@ -127,10 +127,7 @@ goctl migrate —verbose —version v1.4.3
    `goctl`can be read as `go control`. `goctl` means not to be controlled by code, instead, we control it. The inside `go` is not `golang`. At the very beginning, I was expecting it to help us improve productivity, and make our lives easier.
 
    ```shell
-   # for Go 1.15 and earlier
+   # for Go
-   GO111MODULE=on go get -u github.com/zeromicro/go-zero/tools/goctl@latest
-
-   # for Go 1.16 and later
    go install github.com/zeromicro/go-zero/tools/goctl@latest
    
    # For Mac