nvim: add CH for :CleverHelp

.config/nvim/lua/blake/plugins.lua

@@ -516,8 +516,10 @@ return require('packer').startup({function()
    use { -- rhysd: clever-split:       split calculation based on pane dimensions - CS or CleverSplit
       'rhysd/clever-split.vim',
       config = function()
-         -- Map :CS to :CleverSplit
-         vim.cmd 'cab CS CleverSplit'
+         vim.cmd [[
+         cab CH CleverHelp
+         cab CS CleverSplit
+         ]]
       end
    }
    -- use { -- rhysd: accelerated jk:  make j and k move faster by pressing them a lot movement