Update bld.bat SYCL_INCLUDE_DIR_HINT for 2025.1.0

[ndgrigorian]

Installing dpcpp_win-64 2025.1.0 installs clang 20

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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_104 ran successfully.
Passed: 895
Failed: 1
Skipped: 154

[coveralls]

coverage: 86.378%. remained the same
when pulling a4bee84 on update-sycl-include-hint-2025.1
into 6f649bb on master.