clean up and update spelling_failures

- Alpha sorts list
- Add contribex meeting notes dir
- Removes paths that no longer exist

hack/.spelling_failures

@@ -1,10 +1,11 @@
+contributors/guide/contributor-cheatsheet/README-de.md
+contributors/guide/contributor-cheatsheet/README-fr.md
+contributors/guide/contributor-cheatsheet/README-it.md
+contributors/guide/contributor-cheatsheet/README-pt.md
+events/2014
 events/elections/2017/
-vendor/
-sig-contributor-experience/surveys/contribex-survey-2018.csv
+sig-contributor-experience/meeting-notes-archive
 sig-contributor-experience/surveys/2018/contribex-survey-2018.csv
 sig-contributor-experience/surveys/2019/contribex-survey-2019.csv
-events/2014
-contributors/guide/contributor-cheatsheet/README-fr.md
-contributors/guide/contributor-cheatsheet/README-pt.md
-contributors/guide/contributor-cheatsheet/README-de.md
-contributors/guide/contributor-cheatsheet/README-it.md
+vendor/
+