Update lib/rules/no-missing-import.js

Author: scagood

lib/rules/no-missing-import.js

@@ -31,7 +31,7 @@ module.exports = {
     meta: {
         docs: {
             description:
-                "disallow `import` declarations which import non-existing modules",
+                "disallow `import` declarations which import missing modules",
             recommended: true,
             url: "https://github.com/eslint-community/eslint-plugin-n/blob/HEAD/docs/rules/no-missing-import.md",
         },