Fix coq-makefile ocamldoc call when configured with -annotate.
Fix coq-makefile ocamldoc call when configured with -annotate.

Fixes #6120.

letouzey/coq-wip,maximedenes/coq,silene/coq,gares/coq,SkySkimmer/coq,JasonGross/coq,letouzey/coq-wip,silene/coq,SkySkimmer/coq,ejgallego/coq,Zimmi48/coq,JasonGross/coq,Matafou/coq,Zimmi48/coq,gares/coq,ejgallego/coq,coq/coq,Zimmi48/coq,ppedrot/coq,coq/coq,ppedrot/coq,maximedenes/coq,JasonGross/coq,maximedenes/coq,letouzey/coq-wip,Matafou/coq,ejgallego/coq,gares/coq,Zimmi48/coq,gares/coq,ppedrot/coq,SkySkimmer/coq,maximedenes/coq,coq/coq,SkySkimmer/coq,ppedrot/coq,coq/coq,gares/coq,letouzey/coq-wip,maximedenes/coq,letouzey/coq-wip,silene/coq,Matafou/coq,ppedrot/coq,JasonGross/coq,ejgallego/coq