Fix: Sanitise project path on windows for doc build

[OliverDavey]

Fix for issue #526

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 100.00%. Comparing base (b0367f0) to head (430a6cb). :warning: Report is 2 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop      #527   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           25        25           
  Lines         1631      1631           
  Branches       257       257           
=========================================
  Hits          1631      1631           

Flag	Coverage Δ
unittests	100.00% <ø> (ø)

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[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[fgmacedo]

Thanks @OliverDavey !