matched syntax of doxyfile-path to example on doxygen action site.

[stephenhensley]

Well, this is a bit annoying to troubleshoot..

[github-actions[bot]]

Unit Test Results

    1 files  ±0    16 suites  ±0   0s :stopwatch: ±0s 145 tests ±0  145 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit 1032fc82. ± Comparison against base commit 7a611e01.