docs: fix typo in README.md

Author: Huachao

README.md

@@ -658,7 +658,7 @@ the exposed variables. email property is also exposed becuase we metioned the gr
 ## Working with generics
 
 Generics are not supported because TypeScript does not have good reflection abilities yet.
-Once TypeScript team provide us better runtime type reelection tools, generics will be implemented.
+Once TypeScript team provide us better runtime type reflection tools, generics will be implemented.
 There are some tweaks however you can use, that maybe can solve your problem.
 [Checkout this example.](https://github.com/pleerock/class-transformer/tree/master/sample/sample4-generics)