fix(tools): doc block links not clickable in VS Code (aws#12336)

Before
<img src="https://user-images.githubusercontent.com/12623249/103578859-959d9600-4ed7-11eb-9879-7a6e86870bbd.png" width="500" />

After
<img src="https://user-images.githubusercontent.com/12623249/103578879-9f26fe00-4ed7-11eb-9a81-87a01c4a4115.png" width="500" />


----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

tools/cfn2ts/lib/codegen.ts

@@ -898,7 +898,7 @@ export default class CodeGenerator {
     this.code.line('/**');
     before.forEach(line => this.code.line(` * ${line}`.trimRight()));
     if (link) {
-      this.code.line(` * @see ${link}`);
+      this.code.line(` * @link ${link}`);
     }
     this.code.line(' */');
     return;