Add API doc to String object
@@ -324,7 +324,7 @@ var builtinCommonInstanceMethods = []*BuiltInMethodObject{
// File.extname("foo.rb")
// ```
//
- // TDB: the load paths for `require`
+ // TBD: the load paths for `require`
//
// @param filename [String] Quoted file name of the library, without extension
// @return [Boolean] Result of loading module
