Fix typos

Author: DenisGorbachev

README.md

@@ -189,12 +189,12 @@ logger.log('info', 'test message', 'first', 'second', {number: 123});
 
 logger.log('info', 'test message %s, %s', 'first', 'second', {number: 123}, function(){});
 // info: test message first, second
-// meta = {numer: 123}
+// meta = {number: 123}
 // callback = function(){}
 
 logger.log('info', 'test message', 'first', 'second', {number: 123}, function(){});
 // info: test message first second
-// meta = {numer: 123}
+// meta = {number: 123}
 // callback = function(){}
 ```