Update docs to reflect newly support shells with autocompletions (#29610)

* Update docs to reflect newly support shells with autocompletions

* Update Windows docs to use Powershell instead of zsh

* Adds a bit more explanation of the different lines.

* Apply suggestions from code review

Co-authored-by: Tim Bannister <tim@scalefactory.com>

* Apply PR suggestions

Co-authored-by: Tim Bannister <tim@scalefactory.com>

content/en/docs/tasks/tools/included/optional-kubectl-configs-pwsh.md

@@ -0,0 +1,23 @@
+---
+title: "PowerShell auto-completion"
+description: "Some optional configuration for powershell auto-completion."
+headless: true
+---
+
+The kubectl completion script for PowerShell can be generated with the command `kubectl completion powershell`.
+
+To do so in all your shell sessions, add the following line to your `$PROFILE` file:
+
+```powershell
+kubectl completion powershell | Out-String | Invoke-Expression
+```
+
+This command will regenerate the auto-completion script on every PowerShell start up. You can also add the generated script directly to your `$PROFILE` file.
+
+To add the generated script to your `$PROFILE` file, run the following line in your powershell prompt:
+
+```powershell
+kubectl completion powershell >> $PROFILE
+```
+
+After reloading your shell, kubectl autocompletion should be working.

content/en/docs/tasks/tools/install-kubectl-linux.md

@@ -176,7 +176,7 @@ kubectl version --client
 
 ### Enable shell autocompletion
 
-kubectl provides autocompletion support for Bash and Zsh, which can save you a lot of typing.
+kubectl provides autocompletion support for Bash, Zsh, Fish, and PowerShell, which can save you a lot of typing.
 
 Below are the procedures to set up autocompletion for Bash and Zsh.
 

content/en/docs/tasks/tools/install-kubectl-macos.md

@@ -159,7 +159,7 @@ If you are on macOS and using [Macports](https://macports.org/) package manager,
 
 ### Enable shell autocompletion
 
-kubectl provides autocompletion support for Bash and Zsh, which can save you a lot of typing.
+kubectl provides autocompletion support for Bash, Zsh, Fish, and PowerShell which can save you a lot of typing.
 
 Below are the procedures to set up autocompletion for Bash and Zsh.
 

content/en/docs/tasks/tools/install-kubectl-windows.md

@@ -22,7 +22,6 @@ The following methods exist for installing kubectl on Windows:
 - [Install kubectl binary with curl on Windows](#install-kubectl-binary-with-curl-on-windows)
 - [Install on Windows using Chocolatey or Scoop](#install-on-windows-using-chocolatey-or-scoop)
 
-
 ### Install kubectl binary with curl on Windows
 
 1. Download the [latest release {{< param "fullversion" >}}](https://dl.k8s.io/release/{{< param "fullversion" >}}/bin/windows/amd64/kubectl.exe).
@@ -134,11 +133,11 @@ Edit the config file with a text editor of your choice, such as Notepad.
 
 ### Enable shell autocompletion
 
-kubectl provides autocompletion support for Bash and Zsh, which can save you a lot of typing.
+kubectl provides autocompletion support for Bash, Zsh, Fish, and PowerShell, which can save you a lot of typing.
 
-Below are the procedures to set up autocompletion for Zsh, if you are running that on Windows.
+Below are the procedures to set up autocompletion for PowerShell.
 
-{{< include "included/optional-kubectl-configs-zsh.md" >}}
+{{< include "included/optional-kubectl-configs-pwsh.md" >}}
 
 ### Install `kubectl convert` plugin