fix tmux.conf syntax errors

.tmux.conf

@@ -1,5 +1,5 @@
 #configure mouse
-setw -g mouse-mode on
+set -g mouse-mode on
 set -g mouse-select-pane on
 set -g mouse-resize-pane on
 set -g mouse-select-window on
@@ -32,6 +32,5 @@ bind -r K resize-pane -U 5
 bind -r L resize-pane -R 5
 
 unbind %
-unbind "
 bind v split-window -h
 bind b split-window -v