Update getting-started.md (vuejs#541)

fixed typo

docs/en/getting-started.md

@@ -1,6 +1,6 @@
 # Getting Started
 
-At the center of every Vuex application is the **store**. A "store" is basically a container that holds your application **state**. There are two things that makes a Vuex store different from a plain global object:
+At the center of every Vuex application is the **store**. A "store" is basically a container that holds your application **state**. There are two things that make a Vuex store different from a plain global object:
 
 1. Vuex stores are reactive. When Vue components retrieve state from it, they will reactively and efficiently update if the store's state changes.