Last dir bold - missed reset

Missed the bold reset code `%b` in the logic, which caused everthing
after the last dir to be bold, including the command line entry.

powerlevel9k.zsh-theme

@@ -869,7 +869,7 @@ prompt_dir() {
 
   if [[ -n "${POWERLEVEL9K_DIR_PATH_HIGHLIGHT_FOREGROUND}" ]]; then
     if [[ $path_opt == "/" || $path_opt == "~" || $(dirname $path_opt) == "/" || ${POWERLEVEL9K_DIR_OMIT_FIRST_CHARACTER} ]]; then
-      current_path="$bd%F{$POWERLEVEL9K_DIR_PATH_HIGHLIGHT_FOREGROUND}$current_path%F{$dir_state_foreground}"
+      current_path="$bd%F{$POWERLEVEL9K_DIR_PATH_HIGHLIGHT_FOREGROUND}$current_path%F{$dir_state_foreground}%b"
     else
       current_path="$(dirname $current_path)/$bd%F{$POWERLEVEL9K_DIR_PATH_HIGHLIGHT_FOREGROUND}$(basename $current_path)%F{$dir_state_foreground}"
     fi