add Windows drive prefix to temp dir usage in the doc generation task

[glours]

What I did
Add Windows drive prefix to temp directory when executing a shell command like cp or rm

At least Makefile will work with Git Bash

Related issue
N/A

(not mandatory) A picture of a cute animal, if possible in relation to what you did

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.05 🎉

Comparison is base (b0a35cc) 59.40% compared to head (6d2c377) 59.45%.

Additional details and impacted files

@@            Coverage Diff             @@
##               v2   #10637      +/-   ##
==========================================
+ Coverage   59.40%   59.45%   +0.05%     
==========================================
  Files         107      107              
  Lines        9395     9395              
==========================================
+ Hits         5581     5586       +5     
+ Misses       3240     3236       -4     
+ Partials      574      573       -1     

see 1 file with indirect coverage changes

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