update docs for asAbsolutePath, https://github.com/microsoft/vscode/issues/105277

src/vs/vscode.d.ts

@@ -5626,6 +5626,9 @@ declare module 'vscode' {
 		/**
 		 * Get the absolute path of a resource contained in the extension.
 		 *
+		 * *Note* that an absolute uri can be constructed via [`Uri.joinPath`](#Uri.joinPath) and
+		 * [`extensionUri`](#ExtensionContent.extensionUri), e.g. `vscode.Uri.joinPath(context.extensionUri, relativePath);`
+		 *
 		 * @param relativePath A relative path to a resource contained in the extension.
 		 * @return The absolute path of the resource.
 		 */