chore: fix Warning typo

lib/manager/npm/update.js

@@ -50,7 +50,7 @@ function setNewValue(currentFileContent, upgrade) {
     if (!newFileContent) {
       logger.info(
         { currentFileContent, parsedContents, depType, depName, newVersion },
-        'Warniung: setNewValue error'
+        'Warning: setNewValue error'
       );
       return currentFileContent;
     }