Run spellchecker on depot_tools

This was made by running `codespell` and `scspell`
and then checking the results.

Change-Id: I169fd5b40294f83015075b4a899fbca263821f25
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2144602
Commit-Queue: Quinten Yearsley <qyearsley@chromium.org>
Auto-Submit: Quinten Yearsley <qyearsley@chromium.org>
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
diff --git a/fix_encoding.py b/fix_encoding.py
index b327a49..1d84750 100644
--- a/fix_encoding.py
+++ b/fix_encoding.py
@@ -250,7 +250,7 @@
   """Output adaptor to a file output on Windows.
 
   If the standard FileWrite function is used, it will be encoded in the current
-  code page. WriteConsoleW() permits writting any character.
+  code page. WriteConsoleW() permits writing any character.
   """
   def __init__(self, stream, fileno, encoding):
     super(WinUnicodeOutput, self).__init__(