README.md - Simplified Windows PowerShell setup (#1047)

* Update README.md

docs: replaced section about profile location on Windows

In now uses the built in env variable $profile

* Update README.md

style: styled section about windows profile

README.md

@@ -174,10 +174,10 @@ fnm env --use-on-cd | Out-String | Invoke-Expression
 ```
 
 - For macOS/Linux, the profile is located at `~/.config/powershell/Microsoft.PowerShell_profile.ps1`
-- On Windows, PowerShell comes pre-installed, but there are two versions of it. [Read more about it here](https://learn.microsoft.com/en-us/powershell/scripting/windows-powershell/install/installing-windows-powershell). The profile is located at different places depending on which version you're using:
-  - Built in PowerShell (aka "Windows PowerShell"): `~\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1`
-  - The newer, PowerShell >= 7, that's not built in: `~\Documents\PowerShell\Microsoft.PowerShell_profile.ps1`
-
+- On Windows to edit your profile you can run this in a PowerShell
+  ```powershell
+  notepad $profile
+  ```
 #### Windows Command Prompt aka Batch aka WinCMD
 
 fnm is also supported but is not entirely covered. [You can set up a startup script](https://superuser.com/a/144348) and append the following line: