docs(keymaps): correct lists group comment to gl/gL

The lists mapping comment still listed gl<Space>; bare gl/gL are now the
remove-checkbox maps after the P1 #3 parity change.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

lua/nuwiki/keymaps.lua

@@ -7,7 +7,7 @@
 --   mappings = {
 --     enabled       = true,
 --     links         = true,  -- <CR>, <S-CR>, <Tab>, <BS>, +, …
---     lists         = true,  -- <C-Space>, gln/glp, glx, gl<Space>, …
+--     lists         = true,  -- <C-Space>, gln/glp, glx, gl/gL, …
 --     headers       = true,  -- =, -, ]], [[, ]=, [=, ]u, [u
 --     table_editing = true,  -- gqq, gq1, gww, gw1, <A-Left>, <A-Right>
 --     html_export   = true,  -- <Leader>wh, <Leader>whh