chore(input): change v-model eventname back to 'change'

Someone can't reproduce the bug that input shows [Object object]. So I will roll back it.

packages/common/Input/src/main.vue

@@ -65,7 +65,7 @@ export default {
   },
   model: {
     prop: 'value',
-    event: 'changes'
+    event: 'change'
   },
   props: {
     type: {
@@ -107,7 +107,7 @@ export default {
   },
   methods: {
     handleInput (e) {
-      this.$emit('changes', e.target.value)
+      this.$emit('change', e.target.value)
     },
     handleBlur (e) {
       this.$emit('blur', e)

styles/Input.scss

@@ -82,7 +82,6 @@
       padding: 0 14px;
       font-size: $large-input-font-size;
     }
-    
   }
   .n-input__input.n-input__input--round {
     &.n-input__input--small-size {