vim:keys: Fix <leader>* for words starting w/ b

`<C-R><C-W>` inserts the cword, but skips over any character that were
already typed. This broke the search for words beginning with a `b`.

.config/vim/vimrc.d/40-keys.vim

@@ -92,7 +92,7 @@ vnoremap * y/\V<C-R>=escape(@",'/\')<CR><CR>
 vnoremap # y?\V<C-R>=escape(@",'?\')<CR><CR>
 
 " Use ripgrep as search-engine for `*`
-nmap <leader>* :Rg \b<C-R><C-W>\b<CR>
+nmap <leader>* :Rg \b<C-R>=expand('<cword>')<CR>\b<CR>
 
 " Select last pasted text in same visual mode as it was selected (v, V, or ^V)
 " Taken from: https://vim.fandom.com/wiki/Selecting_your_pasted_text