Fix typos with codespell

Using codespell 1.14.0.

Method:
```
$ cat > ../godot-word-whitelist.txt << EOF
ang
doubleclick
lod
nd
numer
que
te
unselect
EOF
$ codespell -w -q 3 -I ../godot-word-whitelist.txt --skip="./thirdparty,*.po"
$ git diff // undo unwanted changes
```

editor/import_dock.cpp

@@ -424,7 +424,7 @@ void ImportDock::_reimport_attempt() {
 void ImportDock::_reimport_and_restart() {
 
 	EditorNode::get_singleton()->save_all_scenes();
-	EditorResourcePreview::get_singleton()->stop(); //dont try to re-create previews after import
+	EditorResourcePreview::get_singleton()->stop(); //don't try to re-create previews after import
 	_reimport();
 	EditorNode::get_singleton()->restart_editor();
 }