Switch more function arguments docs to new-style.
diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst
index 7cf8550..7913975 100644
--- a/Doc/library/shutil.rst
+++ b/Doc/library/shutil.rst
@@ -1,4 +1,3 @@
-
:mod:`shutil` --- High-level file operations
============================================
@@ -86,7 +85,7 @@
match one of the glob-style *patterns* provided. See the example below.
-.. function:: copytree(src, dst[, symlinks=False[, ignore=None]])
+.. function:: copytree(src, dst, symlinks=False, ignore=None)
Recursively copy an entire directory tree rooted at *src*. The destination
directory, named by *dst*, must not already exist; it will be created as well
@@ -114,7 +113,7 @@
ultimate tool.
-.. function:: rmtree(path[, ignore_errors[, onerror]])
+.. function:: rmtree(path, ignore_errors=False, onerror=None)
.. index:: single: directory; deleting