Tweak README.md

Eugene Leonovich · Eugene Leonovich · commit abbda016b461 · 2016-06-29T00:30:33.000+02:00
diff --git a/README.md b/README.md
@@ -207,7 +207,7 @@ The result of this call might look like this:
 ]
 ```
 
-In addition, you can specify a key (or keys) to return only a subset of the array:
+In addition, you can specify a key to return only a subset of the array:
 
 ```php
 $calls = $queue->statistics('calls');

Original file line number	Diff line number	Diff line change
`@@ -207,7 +207,7 @@ The result of this call might look like this:`
`207`	`207`	`]`
`208`	`208`	```
`209`	`209`
`210`		`-In addition, you can specify a key (or keys) to return only a subset of the array:`
	`210`	`+In addition, you can specify a key to return only a subset of the array:`
`211`	`211`
`212`	`212`	```php
`213`	`213`	`$calls = $queue->statistics('calls');`