Missing Observable imports in documentation and in Stackblitz example

[devzom]

Hey, I've noticed that the examples of observable docs in section: Disposing Observable Executions all are missing
import { Observable } from 'rxjs'; the same in the Stackblitz examples.

[jakovljevic-mladen]

Hi @devzom, I proposed a fixing PR: #7026. Thank you for reporting.

EDIT: This is now merged to master, locking the issue.

[devzom]

Great, thank You :)