Automatically trigger LSP diagnose on buffer changed

[IntangibleW]

I use helix to write Go code. And configured gopls and golangci-lint-langserver as my LSP. But sometimes when I did changes to buffer, LSP gives my an error, and the only way I can solve it is to wirte changes to file. That's weird, cause I never get into this in other editors like vscode and JetBrains family. I thought it's due to the helix mechanism that it only notify LSP when the file content is changed, not the buffer. I hope there is a graceful way to handle this.