Fixed incorrect line offset

Author: vzamanillo

lib/init.js

@@ -17,7 +17,7 @@ const parseLuacOutput = (output, file, editor) => {
   const messages = [];
   let match = REGEX.exec(output);
   while (match !== null) {
-    const line = Number.parseInt(match[1], 10) - 2;
+    const line = Number.parseInt(match[1], 10) - 1;
     messages.push({
       severity: 'error',
       excerpt: match[2],