rmdir: add page (#1933)

pages/windows/rmdir.md

@@ -0,0 +1,15 @@
+# rmdir
+
+> Remove a directory and its contents.
+
+- Remove an empty directory:
+
+`rmdir {{path/to/directory}}`
+
+- Remove a directory and its contents recursively:
+
+`rmdir {{path/to/directory}} /s`
+
+- Remove a directory and its contents recursively without prompting:
+
+`rmdir {{path/to/directory}} /s /q`