Squashed 'docs/' changes from 4eb10c1a9..b8b20e9a2

Squashed 'docs/' changes from 4eb10c1a9..b8b20e9a2

b8b20e9a2 Update index.md
f33994fe6 Remove files.Extension (duplicate of files.Ext)
948d6d69d layouts: Use .File.Path
d3050b78c Document .Page.BundleType (#1620)
8a033918f Image filters: ensure Grayscale is a level-2 heading
98537018f Document .Publish method for global resources
963ddc994 docs: add a link to the mailmap documentation
915f858dc Fix release notes version
58093dafe Update index.md
8008ba1e1 Release 0.91.2
d1788dae8 Merge branch 'tempv0.91.2'
af2970180 Revert "config/security: Add HOME to default exec env var whitelist"
2648d3088 netlify: Hugo 0.91.1
d0801599c Merge branch 'tempv0.91.1'
b343bfd7a config/security: Add HOME to default exec env var whitelist
03fbb403f Update data-templates.md
2f608055f Correct GetRemote docs and examples
4e942166a Update 2021-12-17-no-more-releasenotes.md
dbf9514fd Update security.toml
2c38aa356 Update index.md
562ad8e96 Add timeZone
4bc482152 Update introduction.md
1eb66c758 news: Add a note about the placement of release notes
b2a293abb Remove the default archetype template
f9837793c netlify: Hugo 0.91.0
467256ad5 docs: Regen docs helper
68554cf77 Add some basic security policies with sensible defaults

git-subtree-dir: docs
git-subtree-split: b8b20e9a257dca8e53ca9e5f314cf54b18702a37