Tweak proposed API JSDoc (microsoft#183590)

* Tweak proposed API JSDoc

* workbench -> workspace

Author: joyceerhl

src/vscode-dts/vscode.proposed.shareProvider.d.ts

@@ -12,7 +12,7 @@ declare module 'vscode' {
 	 */
 	export interface ShareableItem {
 		/**
-		 * A resource in the editor that can be shared.
+		 * A resource in the workspace that can be shared.
 		 */
 		resourceUri: Uri;