examples: improve grammar in the interceptor example

[arjan-bal]

RELEASE NOTES: none

[aranjans]

LGTM!

[dfawley]

Thanks for the cleanups!

[arjan-bal]

@dfawley I've addressed the comments. PTAL and help merge the PR if it looks good.

[dfawley]

@arjan-bal please avoid force-pushes whenever possible.

If you can't avoid a force push (i.e. because of conflicting changes on master), then please:

1. do NOT do squashes - use separate commits for updates. we squash when we merge the PR.
2. wait until as late as possible to do the force push

[dfawley]

Thanks for the PR!

[arjan-bal]

@arjan-bal please avoid force-pushes whenever possible.

If you can't avoid a force push (i.e. because of conflicting changes on master), then please:

1. do NOT do squashes - use separate commits for updates. we squash when we merge the PR.
2. wait until as late as possible to do the force push

Acknowledged. I was squashing commits to keep the history clean. I didn't know that the maintainers do the same before merging. Will keep the usage of destructive commands to a minimum.