Add TimeRanges object spec URLs (mdn#10370)

Author: sideshowbarker

api/TimeRanges.json

@@ -3,6 +3,7 @@
     "TimeRanges": {
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/TimeRanges",
+        "spec_url": "https://html.spec.whatwg.org/multipage/media.html#time-ranges",
         "support": {
           "chrome": {
             "version_added": "6"
@@ -50,6 +51,7 @@
       "end": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TimeRanges/end",
+          "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-timeranges-end-dev",
           "support": {
             "chrome": {
               "version_added": "6"
@@ -98,6 +100,7 @@
       "length": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TimeRanges/length",
+          "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-timeranges-length-dev",
           "support": {
             "chrome": {
               "version_added": true
@@ -146,6 +149,7 @@
       "start": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TimeRanges/start",
+          "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-timeranges-start-dev",
           "support": {
             "chrome": {
               "version_added": "6"