packages,plugins: add package documentation

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/org/api-report.md

@@ -89,6 +89,4 @@ export const UserProfileCard: ({
   entity?: UserEntity | undefined;
   variant?: InfoCardVariants | undefined;
 }) => JSX.Element;
-
-// (No @packageDocumentation comment for this package)
 ```

plugins/org/src/index.ts

@@ -13,6 +13,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+/**
+ * A Backstage plugin that helps you create entity pages for your organization
+ *
+ * @packageDocumentation
+ */
+
 export {
   orgPlugin,
   orgPlugin as plugin,