docs: add a single-line command to update the PowerShell profile (#308)

Co-authored-by: 野声 <artin@cat.ms>

README.md

@@ -48,11 +48,7 @@ echo 'eval "$(vfox activate zsh)"' >> ~/.zshrc
 echo 'vfox activate fish | source' >> ~/.config/fish/config.fish
 
 # For PowerShell:
-# 1. Open PowerShell Profile:
-New-Item -Type File -Path $PROFILE # Just ignore the 'file already exists' error.
-Invoke-Item $PROFILE
-# 2. Add the following line to the end of your $PROFILE and save:
-Invoke-Expression "$(vfox activate pwsh)"
+if (-not (Test-Path -Path $PROFILE)) { New-Item -Type File -Path $PROFILE -Force }; Add-Content -Path $PROFILE -Value 'Invoke-Expression "$(vfox activate pwsh)"'
 
 # For Clink:
 # 1. Install clink: https://github.com/chrisant996/clink/releases

README_CN.md

@@ -43,12 +43,8 @@ echo 'eval "$(vfox activate bash)"' >> ~/.bashrc
 echo 'eval "$(vfox activate zsh)"' >> ~/.zshrc
 echo 'vfox activate fish | source' >> ~/.config/fish/config.fish
 
-# PowerShell:
-# 1. 打开 PowerShell 配置文件:
-New-Item -Type File -Path $PROFILE # 无需在意 `文件已存在` 错误
-Invoke-Item $PROFILE
-# 2. 将下面一行添加到你的 $PROFILE 文件末尾并保存:
-Invoke-Expression "$(vfox activate pwsh)"
+# 对于 PowerShell
+if (-not (Test-Path -Path $PROFILE)) { New-Item -Type File -Path $PROFILE -Force }; Add-Content -Path $PROFILE -Value 'Invoke-Expression "$(vfox activate pwsh)"'
 
 # Clink:
 # 1. 安装 clink: https://github.com/chrisant996/clink/releases

docs/guides/quick-start.md

@@ -103,26 +103,13 @@ echo 'vfox activate fish | source' >> ~/.config/fish/config.fish
 
 :::
 
-::: details Powershell
+::: details PowerShell
 
-Open PowerShell Profile:
-
-```shell
-New-Item -Type File -Path $PROFILE # Just ignore the 'file already exists' error.
-
-# If it prompts "Unable to find the path", then you need to forcefully create profile. Add the "-Force" option.
-# New-Item -Type File -Path $PROFILE –Force
-
-Invoke-Item $PROFILE  # open Profile
-```
-
-Add the following line to the end of your profile and save:
-
-```shell
-Invoke-Expression "$(vfox activate pwsh)"
+```PowerShell
+if (-not (Test-Path -Path $PROFILE)) { New-Item -Type File -Path $PROFILE -Force }; Add-Content -Path $PROFILE -Value 'Invoke-Expression "$(vfox activate pwsh)"'
 ```
 
-If Powershell prompts:`cannot be loaded because the execution of scripts is disabled on this system`.**Open PowerShell** with **Run as Administrator**.Then, run this command in PowerShell
+If PowerShell prompts: `cannot be loaded because the execution of scripts is disabled on this system`.**Open PowerShell** with **Run as Administrator**.Then, run this command in PowerShell
 
 ```shell
 Set-ExecutionPolicy -ExecutionPolicy RemoteSigned

docs/zh-hans/guides/quick-start.md

@@ -104,30 +104,19 @@ echo 'vfox activate fish | source' >> ~/.config/fish/config.fish
 
 :::
 
-::: details Powershell
+::: details PowerShell
 
-打开 PowerShell 配置文件:
+创建 PowerShell 配置:
 
 ```shell
-New-Item -Type File -Path $PROFILE # 无需在意 `文件已存在` 错误
-
-# 如果它提示未能找到路径，那么你需要强制创建profile。添加"-Force"选项。
-# New-Item -Type File -Path $PROFILE –Force
-
-Invoke-Item $PROFILE # 打开profile
-```
-
-将下面一行添加到你的 $PROFILE 文件末尾并保存:
-
-```shell
-Invoke-Expression "$(vfox activate pwsh)"
+if (-not (Test-Path -Path $PROFILE)) { New-Item -Type File -Path $PROFILE -Force }; Add-Content -Path $PROFILE -Value 'Invoke-Expression "$(vfox activate pwsh)"'
 ```
 
-如果powershell提示：`在此系统上禁止运行脚本`，那么请你**以管理员身份重新运行powershell**输入如下命令
+如果 PowerShell 提示：`在此系统上禁止运行脚本`，那么请你**以管理员身份重新运行 PowerShell**输入如下命令
 
 ```shell
 Set-ExecutionPolicy -ExecutionPolicy RemoteSigned
-# 之后输入Y，按回车
+# 之后输入 Y，按回车
 y
 ```