windows/*: add PowerShell pwd and mv equivalents (#11342)

* windows/*: add PowerShell pwd and mv equivalents

* move-item: simplify examples

* move-item: fix typo

* get-location, move-item: add PowerShell-only notice

pages/windows/mv.md

@@ -0,0 +1,13 @@
+# mv
+
+> In PowerShell, this command is an alias of `Move-Item`.
+> However, this command is not available on the Command Prompt (`cmd`). Use `move` instead for similar functionality.
+> More information: <https://learn.microsoft.com/powershell/module/microsoft.powershell.management/move-item>.
+
+- View documentation for the equivalent Command Prompt command:
+
+`tldr move`
+
+- View documentation for the original PowerShell command:
+
+`tldr move-item`