feat(readme): correctness changes

.config/nvim/lsp/bashls.lua

@@ -0,0 +1,4 @@
+return {
+	cmd = { 'bash-language-server', 'start' },
+	filetypes = { 'sh', 'bash' },
+}

.config/nvim/lsp/fish_ls.lua

@@ -0,0 +1,4 @@
+return {
+	cmd = { 'fish-lsp', 'start' },
+	filetypes = { 'fish' },
+}