Update API links to available API docs

Author: kLabz

downloads/versions.json

@@ -119,6 +119,7 @@
 		{
 			"date": "2015-10-12",
 			"version": "3.2.1",
+			"api": "3.3.1",
 			"tag": "3.2.1"
 		},
 		{
@@ -149,26 +150,31 @@
 		{
 			"date": "2017-03-20",
 			"version": "3.4.2",
+			"api": "3.4.2",
 			"tag": "3.4.2"
 		},
 		{
 			"date": "2017-09-12",
 			"version": "3.4.3",
+			"api": "3.4.3",
 			"tag": "3.4.3"
 		},
 		{
 			"date": "2017-10-08",
 			"version": "3.4.4",
+			"api": "3.4.4",
 			"tag": "3.4.4"
 		},
 		{
 			"date": "2018-01-31",
 			"version": "3.4.5",
+			"api": "3.4.5",
 			"tag": "3.4.5"
 		},
 		{
 			"date": "2018-02-12",
 			"version": "3.4.6",
+			"api": "3.4.6",
 			"tag": "3.4.6"
 		},
 		{
@@ -190,36 +196,43 @@
 		{
 			"date": "2018-02-23",
 			"version": "4.0.0-preview.3",
+			"api": "4.0.0-preview.3",
 			"tag": "4.0.0-preview.3"
 		},
 		{
 			"date": "2018-06-12",
 			"version": "4.0.0-preview.4",
+			"api": "4.0.0-preview.4",
 			"tag": "4.0.0-preview.4"
 		},
 		{
 			"date": "2018-10-13",
 			"version": "4.0.0-preview.5",
+			"api": "4.0.0-preview.5",
 			"tag": "4.0.0-preview.5"
 		},
 		{
 			"date": "2019-02-01",
 			"version": "4.0.0-rc.1",
+			"api": "4.0.0-rc.1",
 			"tag": "4.0.0-rc.1"
 		},
 		{
 			"date": "2019-03-22",
 			"version": "4.0.0-rc.2",
+			"api": "4.0.0-rc.2",
 			"tag": "4.0.0-rc.2"
 		},
 		{
 			"date": "2019-06-13",
 			"version": "4.0.0-rc.3",
+			"api": "4.0.0-rc.3",
 			"tag": "4.0.0-rc.3"
 		},
 		{
 			"date": "2019-09-04",
 			"version": "4.0.0-rc.4",
+			"api": "4.0.0-rc.4",
 			"tag": "4.0.0-rc.4"
 		},
 		{
@@ -284,13 +297,11 @@
 		{
 			"date": "2020-09-11",
 			"version": "4.1.4",
-			"api": "4.1.4",
 			"tag": "4.1.4"
 		},
 		{
 			"date": "2020-12-31",
 			"version": "4.1.5",
-			"api": "4.1.5",
 			"tag": "4.1.5"
 		},
 		{