fix typo in readme
@@ -158,7 +158,7 @@ labours -m burndown-file
Burndown statistics for every file in the repository which is alive in the latest revision.
-Note: it will generate separate graph for every file. You might don't want to run it on repository with many files.
+Note: it will generate separate graph for every file. You don't want to run it on repository with many files.
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Vadim Markovtsev