scratchX: Set Scratch 3 docsURI to ScratchX url

src/extension-support/tw-scratchx-compatibility-layer.js

@@ -95,6 +95,10 @@ const convert = (name, descriptor, functions) => {
         getInfo: () => info
     };
 
+    if (descriptor.url) {
+        info.docsURI = descriptor.url;
+    }
+
     for (const blockDescriptor of descriptor.blocks) {
         const scratchXBlockType = blockDescriptor[0];
         const blockText = blockDescriptor[1];

test/unit/tw_scratchx.js

@@ -35,7 +35,8 @@ test('complex extension', t => {
             ],
             menus: {
                 myMenu: ['abc', 'def', 123, true, false]
-            }
+            },
+            url: 'https://turbowarp.org/myextensiondocs.html'
         },
         {
             unusedGarbage: 10,
@@ -49,6 +50,7 @@ test('complex extension', t => {
 
     const info = converted.getInfo();
     t.equal(info.id, 'scratchxmyextension');
+    t.equal(info.docsURI, 'https://turbowarp.org/myextensiondocs.html');
 
     t.same(info.blocks, [
         {