Tweak some wording

Author: bbatsov

README.org

@@ -20,11 +20,11 @@
   tried to add the rationale behind the rules (if it's omitted, I've
   assumed that it's pretty obvious).
 
-  I didn't come up with all the rules out of nowhere; they are mostly
-  based on my extensive career as a professional software engineer,
-  feedback and suggestions from members of the Emacs Lisp community, and
-  various highly regarded Emacs Lisp programming resources, such as
-  [[https://www.gnu.org/software/emacs/manual/elisp.html]["GNU Emacs Lisp Reference Manual"]].
+  I didn't come up with all the rules out of nowhere; they are mostly based on
+  my extensive experience of using Emacs and creating/maintaining Emacs
+  packages, feedback and suggestions from members of the Emacs Lisp community,
+  and various highly regarded Emacs Lisp programming resources, such as [[https://www.gnu.org/software/emacs/manual/elisp.html]["GNU
+  Emacs Lisp Reference Manual"]].
 
   The guide is still a work in progress; some sections are missing, others
   are incomplete, some rules are lacking examples, some rules don't have