fix readme

added missing --

Author: karshPrime

README.md

@@ -30,6 +30,6 @@ Install using your favorite plugin manager. For example, using
 vim.keymap.set('n', 'v<F5>', ':TMUXcompile RunV<CR>') -- run on horizontal split
 vim.keymap.set('n', 'h<F5>', ':TMUXcompile RunH<CR>') -- run on vertical split
 vim.keymap.set('n', '<F5>', ':TMUXcompile RunBG<CR>') -- run program in background
-vim.keymap.set('n', '<leader><F5>', ':TMUXcompile Make<CR>') - just compile
+vim.keymap.set('n', '<leader><F5>', ':TMUXcompile Make<CR>') -- just compile
 
 ```