path fix for tmux.zsh

zshrc.d/__available__/tmux.zsh

@@ -1,4 +1,4 @@
 if command -v tmux &> /dev/null && [ -n "$PS1" ] && [[ ! "$TERM" =~ screen ]] && [[ ! "$TERM" =~ tmux ]] && [ -z "$TMUX" ]; then
-  exec tmux_default
+  exec ~/bin/tmux_default
 fi