Apply suggestions from code review

Co-authored-by: Russell Keith-Magee <russell@keith-magee.com>

Author: hoodmane

Lib/test/test_io.py

@@ -553,7 +553,7 @@ def do_test(test, obj, abilities):
         for [test, abilities] in tests:
             with self.subTest(test):
                 if test == pipe_writer and not threading_helper.can_start_thread:
-                   skipTest()
+                    skipTest()
                 with test() as obj:
                     do_test(test, obj, abilities)
 

Tools/wasm/README.md

@@ -24,8 +24,9 @@ https://github.com/psf/webassembly for more information.
 To cross compile to the ``wasm32-emscripten`` platform you need
 [the Emscripten compiler toolchain](https://emscripten.org/), 
 a Python interpreter, and an installation of Node version 18 or newer.
-Emscripten version 4.0.2 or newer is recommended. All commands below are
-relative to a checkout of the Python repository.
+Emscripten version 4.0.2 is recommended; newer versions may also work, but all
+official testing is performed with that version. All commands below are relative
+to a checkout of the Python repository.
 
 #### Install [the Emscripten compiler toolchain](https://emscripten.org/docs/getting_started/downloads.html)