nit(mu4e): neutralize comments

Some of our comments/docs can come off as disparaging or snide. They're
glimpses of unfiltered frustration or snarky rubber ducking gone too
far, something I can totally sympathize with, as a scatterbrained
tinkerer, unwittingly made responsible for a lot of work that isn't mine
because of Doom's position as a middleman. But now that Doom has a
veritable userbase, I'd like to hold it to a higher standard.

Light-hearted banter and aired grievances in our source code,
documentation, or community are fine if focused on the problem or the
personal/shared experiences of the community (things that offer value or
amusement to others), but it is never acceptable to attack people or
their efforts. Especially not the very people on whose shoulders Doom
stands.

I sincerely apologize if these have offended you.

Amend: b07614037f

modules/lang/python/config.el

@@ -57,7 +57,7 @@
   (setq python-indent-guess-indent-offset-verbose nil)
 
   ;; Default to Python 3. Prefer the versioned Python binaries since some
-  ;; systems stupidly make the unversioned one point at Python 2.
+  ;; systems link the unversioned one to Python 2.
   (when (and (executable-find "python3")
              (string= python-shell-interpreter "python"))
     (setq python-shell-interpreter "python3"))