Fix method reference

docs/source/progress.rst

@@ -131,7 +131,7 @@ Columns
 
 You may customize the columns in the progress display with the positional arguments to the :class:`~rich.progress.Progress` constructor. The columns are specified as either a `format string <https://docs.python.org/3/library/string.html#formatspec>`_ or a :class:`~rich.progress.ProgressColumn` object.
 
-Format strings will be rendered with a single value `"task"` which will be a :class:`~rich.progress.Task` instance. For example ``"{task.description}"`` would display the task description in the column, and ``"{task.completed} of {task.total}"`` would display how many of the total steps have been completed. Additional fields passed via keyword arguments to `~rich.progress.Progress.update` are stored in ``task.fields``. You can add them to a format string with the following syntax: ``"extra info: {task.fields[extra]}"``.
+Format strings will be rendered with a single value `"task"` which will be a :class:`~rich.progress.Task` instance. For example ``"{task.description}"`` would display the task description in the column, and ``"{task.completed} of {task.total}"`` would display how many of the total steps have been completed. Additional fields passed via keyword arguments to :meth:`~rich.progress.Progress.update` are stored in ``task.fields``. You can add them to a format string with the following syntax: ``"extra info: {task.fields[extra]}"``.
 
 The default columns are equivalent to the following::