Update template.html

Author: zhangenming

src/examples/src/temperature-converter/App/template.html

@@ -1,2 +1,2 @@
-<input type="number" :value="c" @change="setC"> Celsius =
-<input type="number" :value="f" @change="setF"> Fahrenheit
+<input type="number" :value="c" @input="setC"> Celsius =
+<input type="number" :value="f" @input="setF"> Fahrenheit