Remove extra TOC entries by turning H1 headings into H2#85

aidanfnv merged 5 commits intoshader-slang:mainshader-slang/shader-slang.github.io:mainfrom

aidanfnv:fix/readthedocs-headingsaidanfnv/shader-slang.github.io:fix/readthedocs-headingsCopy head branch name to clipboard