fix: arguments for the vim.lsp.Client.supports_method() method

[jrentlez]

This PR fixes the calls to vim.lsp.Client.supports_method(). The : automatically passes client as the first parameter.

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[feoh]

Awesome thanks for the fix! Merging.

[glaulher]

for me it gave a typing alert and null. I needed to correct it as follows:

 if client ~= nil and client.supports_method ~= nil and client:supports_method(vim.lsp.protocol.Methods.textDocument_documentHighlight) then
            local highlight_augroup = vim.api.nvim_create_augroup('kickstart-lsp-highlight', { clear = false })
            vim.api.nvim_create_autocmd({ 'CursorHold', 'CursorHoldI' }, {
              buffer = event.buf,
              group = highlight_augroup,
              callback = vim.lsp.buf.document_highlight,
            })

here too:

if client ~= nil and client.supports_method ~= nil and client:supports_method(vim.lsp.protocol.Methods.textDocument_inlayHint) then
            map('<leader>th', function()
              vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled { bufnr = event.buf })
            end, '[T]oggle Inlay [H]ints')
          end
        end,
      })