Update README-hacking.md
fix typo
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@@ -26,7 +26,7 @@
As a result of both the above, we are very conservative in what sorts of
changes we can accept. Generally, we are not keen on new features. Even if
they are small, they still add to the future maintenance burden, increasing
-the surface area into which future bugs or compatibility changes could be
+the surface area into which future bugs or compatibility breaks could be
introduced.
This is especially true if they are new ways to generate ANSI codes (e.g.
