Fix spec URLs for ArrayBuffer and DataView (#5516)

The existing spec URLs in BCD for the ArrayBuffer and DataView object
incorrectly linked to the spec section for the constructors for those
objects. This change changes the spec URLs to link to the spec sections
for the objects themselves.

javascript/builtins/ArrayBuffer.json

@@ -4,7 +4,7 @@
       "ArrayBuffer": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer",
-          "spec_url": "https://tc39.es/ecma262/#sec-arraybuffer-constructor",
+          "spec_url": "https://tc39.es/ecma262/#sec-arraybuffer-objects",
           "support": {
             "chrome": {
               "version_added": "7"

javascript/builtins/DataView.json

@@ -4,7 +4,7 @@
       "DataView": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/DataView",
-          "spec_url": "https://tc39.es/ecma262/#sec-dataview-constructor",
+          "spec_url": "https://tc39.es/ecma262/#sec-dataview-objects",
           "support": {
             "chrome": {
               "version_added": "9"