doc: update command-line-switches.md

Co-authored-by: John Kleinschmidt <jkleinsc@electronjs.org>

Co-authored-by: Robo <hop2deep@gmail.com>

docs/api/command-line-switches.md

@@ -245,7 +245,7 @@ Force using integrated GPU when there are multiple GPUs available.
 
 Sets the minimum required version of XDG portal implementation to `version`
 in order to use the portal backend for file dialogs on linux. File dialogs
-will fallback to using gtk or kde depening on the desktop environment when
+will fallback to using gtk or kde depending on the desktop environment when
 the required version is unavailable. Current default is set to `3`.
 
 ## Node.js Flags