Typo in task template 19

[afourney]

There's a typo in task template 19 (noticed for task 649).

The template is: "Post in {{subreddit}} subreddit about what could diffusion model help the correpong field"

It should be corrected to: "Post in {{subreddit}} subreddit about what could diffusion model help the corresponding field"

Or better yet: "Post a question to the {{subreddit}} subreddit asking how diffusion models could help the corresponding field"