[XS] Change in coreboot[main]: Documentation: Fix make rule for sphinx-autobuild

[Nicholas Chin (Code Review)]

Attention is currently required from: Václav Straka.

Nicholas Chin has posted comments on this change by Václav Straka. ( https://review.coreboot.org/c/coreboot/+/85833?usp=email )

Change subject: Documentation: Fix make rule for sphinx-autobuild
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Patch Set 1:

(1 comment)

File Documentation/Makefile.sphinx:

https://review.coreboot.org/c/coreboot/+/85833/comment/256b3ac7_c7ec97e7?usp... :
PS1, Line 24: $(ALLSPHINXOPTS)
ALLSPHINXOPTS seems to be outdated; it was removed when this file was regenerated in commit 35599f9a6671. The documentation does have a recommendation for how to add a livehtml target: https://pypi.org/project/sphinx-autobuild/
```
livehtml:
   sphinx-autobuild "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
```