fix diff highlights not working on gitcommit filetypes (#1317)

removed indentline char as it moves indentline a lil bit towards right whenever contextstart highlight shows , check https://github.com/lukas-reineke/indent-blankline.nvim/issues/454

lua/plugins/init.lua

@@ -64,7 +64,7 @@ local plugins = {
 
    -- git stuff
    ["lewis6991/gitsigns.nvim"] = {
-      opt = true,
+      ft = "gitcommit",
       setup = function()
          require("core.lazy_load").gitsigns()
       end,