MAINTAINERS_GUIDE: Replace "are ... responsibility?" with "...ties?"

wking · wking · commit e67ecaebf9a2 · 2017-01-09T11:42:08.000-08:00
"are" is for plurals.

Signed-off-by: W. Trevor King &lt;wking@tremily.us&gt;
diff --git a/MAINTAINERS_GUIDE.md b/MAINTAINERS_GUIDE.md
@@ -18,7 +18,7 @@ available to them.
 This is a living document - if you see something out of date or missing,
 speak up!
 
-## What are a maintainer's responsibility?
+## What are a maintainer's responsibilities?
 
 It is every maintainer's responsibility to:
 
