Fixed usage of unwrap in comment to templated one

[oleksandr-pavlyk]

Fixed usage of non-templated unwrap(KRef) to unwrap<kernel>(KRef) since implementation was changed in #960.

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpctl/pulls/971/index.html

[github-actions]

Array API standard conformance tests for dpctl=0.14.0dev1=py310h8c27c75_21 ran successfully.
Passed: 33
Failed: 801
Skipped: 3138

[coveralls]

Coverage remained the same at 81.996% when pulling 52999ac on corrected-use-of-non-templated-unwrap-in-comments into c610e9b on master.

[github-actions]

Array API standard conformance tests for dpctl=0.14.0dev1=py310h8c27c75_21 ran successfully.
Passed: 33
Failed: 801
Skipped: 3138

[github-actions]

Array API standard conformance tests for dpctl=0.14.0dev1=py310h8c27c75_23 ran successfully.
Passed: 33
Failed: 801
Skipped: 3138

[github-actions]

Deleted rendered PR docs from intelpython.github.com/dpctl, latest should be updated shortly. 🤞

[github-actions]

Array API standard conformance tests for dpctl=0.14.0dev1=py310h8c27c75_28 ran successfully.
Passed: 33
Failed: 801
Skipped: 3138