Fix typos with codespell

Using codespell 1.16.0.

Method:
```
$ cat > ../godot-word-whitelist.txt << EOF
ang
curvelinear
dof
doubleclick
leapyear
lod
merchantibility
nd
numer
ois
ony
que
seeked
synching
te
uint
unselect
webp
EOF

$ codespell -w -q 3 -I ../godot-word-whitelist.txt --skip="./thirdparty,*.po"
$ git diff // undo unwanted changes
```

editor/import_dock.cpp

@@ -182,7 +182,7 @@ void ImportDock::set_edit_multiple_paths(const Vector<String> &p_paths) {
 
 	clear();
 
-	//use the value that is repeated the mot
+	// Use the value that is repeated the most.
 	Map<String, Dictionary> value_frequency;
 
 	for (int i = 0; i < p_paths.size(); i++) {