Added how to install clusterctl section on Windows

Adding section to install clusterctl on windows

Added Installing Clusterctl Section in Windows

Installing clusterctl on windows section added

rectified casing

changed link

small typo fix

minor typo fix

docs/book/src/user/quick-start.md

@@ -95,7 +95,7 @@ a target [management cluster] on the selected [infrastructure provider].
 ### Install clusterctl
 The clusterctl CLI tool handles the lifecycle of a Cluster API management cluster.
 
-{{#tabs name:"install-clusterctl" tabs:"linux,macOS,homebrew"}}
+{{#tabs name:"install-clusterctl" tabs:"linux,macOS,homebrew,Windows"}}
 {{#tab linux}}
 
 #### Install clusterctl binary with curl on linux
@@ -158,6 +158,23 @@ Test to ensure the version you installed is up-to-date:
 clusterctl version
 ```
 
+{{#/tab }}
+{{#tab windows}}
+
+#### Install clusterctl binary with curl on Windows using PowerShell
+Go to the working directory where you want clusterctl downloaded.
+
+Download the latest release; on Windows, type:
+```
+curl {{#releaselink gomodule:"sigs.k8s.io/cluster-api" asset:"clusterctl-windows-amd64.exe" version:"1.1.x"}} -o clusterctl.exe
+```
+Append or prepend the path of that directory to the `PATH` environment variable.
+
+Test to ensure the version you installed is up-to-date:
+```
+clusterctl version
+```
+
 {{#/tab }}
 {{#/tabs }}