Update CHANGES.md

CHANGES.md

@@ -4,7 +4,7 @@
 
 D3 5.0 introduces only a few non-backwards-compatible changes.
 
-D3 now uses [Promises](https://developer.mozilla.org/docs/Web/JavaScript/Guide/Using_promises) instead of asynchronous callbacks. Promises simplify the structure of asynchronous code, especially in modern browsers that support [async and await](https://javascript.info/async-await). (See this [introduction to promises](https://beta.observablehq.com/@mbostock/introduction-to-promises) on [Observable](https://beta.observablehq.com).) For example, to load a CSV file in v4, you might say:
+D3 now uses [Promises](https://developer.mozilla.org/docs/Web/JavaScript/Guide/Using_promises) instead of asynchronous callbacks to load data. Promises simplify the structure of asynchronous code, especially in modern browsers that support [async and await](https://javascript.info/async-await). (See this [introduction to promises](https://beta.observablehq.com/@mbostock/introduction-to-promises) on [Observable](https://beta.observablehq.com).) For example, to load a CSV file in v4, you might say:
 
 ```js
 d3.csv("file.csv", function(error, data) {