Avoid minor logical ambiguity

Signed-off-by: beorn7 <beorn@grafana.com>

MAINTAINERS.md

@@ -13,9 +13,9 @@
   * `ui`: @juliusv
 * `Makefile` and related build configuration: @simonpasquier, @SuperQ
 
-For the sake of brevity all subtrees are not explicitly listed. Due to the size
+For the sake of brevity, not all subtrees are explicitly listed. Due to the
-of this repository, the natural changes in focus of maintainers over time, and
+size of this repository, the natural changes in focus of maintainers over time,
-nuances of where particular features live, this list will always be incomplete
+and nuances of where particular features live, this list will always be
-and out of date. However the listed maintainer(s) should be able to direct a
+incomplete and out of date. However the listed maintainer(s) should be able to
-PR/question to the right person.
+direct a PR/question to the right person.