Fix link resolving in pyenv-versions

Co-Authored-by: Ivan Pozdeev <vano@mail.mipt.ru>

libexec/pyenv-versions

@@ -112,7 +112,7 @@ print_version() {
   if [[ -L "$path" ]]; then
     # Only resolve the link itself for printing, do not resolve further.
     # Doing otherwise would misinform the user of what the link contains.
-    version_repr="$version --> $(resolve_link "$path")"
+    version_repr="$version --> $(readlink "$path")"
   else
     version_repr="$version"
   fi