qmv: add -f do example (tldr-pages#9620)

* Update qmv.md

Rename all files and folders in the current directory, but show only target filenames in the editor:

`qmv -f do .`

* Update qmv.md

- Rename all files and folders in the current directory, but show only target filenames in the editor (you can think of it as a kind of simple mode):

* Update pages/common/qmv.md

Author: marekkowalczyk

pages/common/qmv.md

@@ -22,3 +22,7 @@
 - Move files, but swap the positions of the source and the target filenames in the editor:
 
 `qmv --option swap {{*.jpg}}`
+
+- Rename all files and folders in the current directory, but show only target filenames in the editor (you can think of it as a kind of simple mode):
+
+`qmv --format=do .`