DOC: remove confusing parts of the documentation related to writing docs
DOC: special: fix quoting in latex math
GEN: special: regenerate files
Merge pull request #4280 from pv/docpdffix

DOC: special: fix up quoting in latex math
Merge pull request #4276 from argriffing/remove-obsolete-doc-hacking-docs

DOC: remove confusing parts of the documentation related to writing docs