fix(icons): add some whitespace to the boolean icon (#4163)

Co-authored-by: LostNeophyte <lostneophyte@tuta.io>

lua/lvim/core/breadcrumbs.lua

@@ -38,7 +38,7 @@ M.config = function()
     options = {
       icons = {
         Array = icons.Array .. " ",
-        Boolean = icons.Boolean,
+        Boolean = icons.Boolean .. " ",
         Class = icons.Class .. " ",
         Color = icons.Color .. " ",
         Constant = icons.Constant .. " ",