Add outstanding issues sections for possible contributors

This section is bound to be on Discourse later, keeping the list of
TODOs that got notified on Discord here for now, not to forget

modules/input/layout/README.org

@@ -117,6 +117,10 @@ actually put all the =c= functions on the key that does not need a curl.
 
 * Troubleshooting
 # Common issues and their solution, or places to look for help.
+** Outstanding issues (contributions welcome)
+*** Bépo
+- in eshell, the key `c` is still bound to
+  `evil-collection-eshell-evil-change` in normal mode
 ** How to investigate an issue ?
 If a key is misbehaving, use =describe-key= (=C-h k= or =SPC h k= or =F1 k=) to
 see the functions bound to the key, and more importantly in which map it is