fix: key binding conflicts (#15)

Co-authored-by: 三咲雅 · Misaki Masa <sxyazi@gmail.com>

mactag.yazi/README.md

@@ -54,12 +54,12 @@ This plugin also provides the functionality to add and remove tags. Add followin
 
 ```toml
 [[manager.prepend_keymap]]
-on   = [ "t", "r" ]
+on   = [ "b", "r" ]
 run  = 'plugin mactag --args="add Red"'
 desc = "Tag selected files with red"
 
 [[manager.prepend_keymap]]
-on   = [ "t", "R" ]
+on   = [ "b", "R" ]
 run  = 'plugin mactag --args="remove Red"'
 desc = "Remove red tag from selected files"
 ```