Fix spacing in string representation of dpctl.SyclPlatform

[ndgrigorian]

This PR removes an unnecessary space from dpctl.SyclPlatform.__repr__, fixing spacing in the string representation of dpctl.SyclPlatform

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[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=0.20.0dev0=py310h93fe807_84 ran successfully.
Passed: 894
Failed: 2
Skipped: 154

[coveralls]

coverage: 86.378% (-0.001%) from 86.379%
when pulling 91b64c2 on fix-platform-repr-spacing
into 67317b0 on master.

[github-actions]

Array API standard conformance tests for dpctl=0.20.0dev0=py310h93fe807_102 ran successfully.
Passed: 894
Failed: 2
Skipped: 154

[antonwolfy]

Good catch! Thank you @ndgrigorian