Update formatting

snippets/pickBy.md

@@ -7,7 +7,7 @@ lastUpdated: 2020-10-22T20:24:04+03:00
 
 Creates an object composed of the properties the given function returns truthy for.
 
-- Use `Object.keys(obj)` and `Array.prototype.filter()`to remove the keys for which `fn` returns a falsy value.
+- Use `Object.keys()` and `Array.prototype.filter()`to remove the keys for which `fn` returns a falsy value.
 - Use `Array.prototype.reduce()` to convert the filtered keys back to an object with the corresponding key-value pairs.
 - The callback function is invoked with two arguments: (value, key).