chore(deps): bump nokogiri from 1.11.3 to 1.11.5 in /docs

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.11.3 to 1.11.5.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.11.3...v1.11.5)

Signed-off-by: dependabot[bot] <support@github.com>

docs/Gemfile.lock

@@ -215,7 +215,9 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.4)
     multipart-post (2.1.1)
-    nokogiri (1.11.3-x86_64-darwin)
+    nokogiri (1.11.5-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.11.5-x86_64-linux)
       racc (~> 1.4)
     octokit (4.20.0)
       faraday (>= 0.9)
@@ -260,6 +262,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-18
+  x86_64-linux
 
 DEPENDENCIES
   github-pages (~> 214)