docs(kitex): add go mod tidy step to dependency instructions in both Chinese and English tutorials (#1319)

Author: XinyiWang0204

content/en/docs/kitex/Getting started/tutorial.md

@@ -200,7 +200,7 @@ github.com/apache/thrift/lib/go/thrift: ambiguous import: found package github.c
 github.com/cloudwego/[email protected]/pkg/utils/thrift.go: not enough arguments in call to t.tProt.WriteMessageBegin
 ```
 
-Execute the following commands before proceeding:
+Please first execute the following two commands:
 
 ```bash
 go mod edit -droprequire=github.com/apache/thrift/lib/go/thrift
@@ -209,6 +209,12 @@ go mod edit -replace=github.com/apache/thrift=github.com/apache/[email protected]
 
 This is because the Thrift official library introduced a breaking change in version 0.14, which makes the generated code incompatible.
 
+Then **be sure to run** `go mod tidy` again to retrieve dependencies:
+
+```bash
+go mod tidy
+```
+
 If you want to upgrade the Kitex version, execute `go get -v github.com/cloudwego/kitex@latest`.
 
 ## Writing the Item Service Logic

content/zh/docs/kitex/Getting started/tutorial.md

@@ -200,15 +200,21 @@ github.com/apache/thrift/lib/go/thrift: ambiguous import: found package github.c
 github.com/cloudwego/[email protected]/pkg/utils/thrift.go: not enough arguments in call to t.tProt.WriteMessageBegin
 ```
 
-先执行一遍下述命令，再继续操作：
+请先执行下述两条命令：
 
-```
+```shell
 go mod edit -droprequire=github.com/apache/thrift/lib/go/thrift
 go mod edit -replace=github.com/apache/thrift=github.com/apache/[email protected]
 ```
 
 这是因为 thrift 官方在 0.14 版本对 thrift 接口做了 breaking change，导致生成代码不兼容。
 
+然后**务必再执行一次** `go mod tidy` 拉取依赖：
+
+```shell
+go mod tidy
+```
+
 若想要升级 kitex 版本，执行 `go get -v github.com/cloudwego/kitex@latest` 即可：
 
 ## 编写商品服务逻辑