Add 'eslint_d' PID to 'nvim-lint' config

.config/nvim/after/plugin/nvim-lint.lua

@@ -1,3 +1,5 @@
+vim.env.ESLINT_D_PPID = vim.fn.getpid()
+
 local eslint_linter = "eslint_d"
 
 require("lint").linters_by_ft = {