fix bookmarks plugin on empty output (#762)

* fix bookmarks plugin on empty output

* fix indentation

* remove redundant new line

plugins/bookmarks

@@ -44,7 +44,11 @@ get_links() {
         [ -d "$entry" ] || continue
 
         printf "%20s -> %s\n" "$(basename "$entry")" "$(readlink -f "$entry")"
-    done | fzf | awk 'END { print "'"$BOOKMARKS_DIR"'/"$1 }'
+    done | fzf |
+    awk 'END {
+        if (length($1) == 0) { print "'"$PWD"'" }
+        else { print "'"$BOOKMARKS_DIR"'/"$1 }
+    }'
 }
 
 # Choose symlink with fzf