[PATCH] Makefile: fix grammar in comment

[Greg Ward]

# HG changeset patch
# User Greg Ward <greg-hg at gerg.ca>
# Date 1242137016 14400
# Node ID 94e91205d9b6f7272d6a1b61c39de4c2555df240
# Parent  fa901423ac2379729e1180a74e6b4bec3675146d
Makefile: fix grammar in comment

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@
 	$(MAKE) -C doc
 
 clean:
-	-$(PYTHON) setup.py clean --all # ignore errors of this command
+	-$(PYTHON) setup.py clean --all # ignore errors from this command
 	find . -name '*.py[cdo]' -exec rm -f '{}' ';'
 	rm -f MANIFEST mercurial/__version__.py mercurial/*.so tests/*.err
 	rm -rf locale