Bad value “handheld, only screen and (max-device-width:640px)” for attribute “media” on element “link”: The media “handheld” has been deprecated

[davorpa]

As it can see in logs, the CI environment fails due to tests performed by script/validate-html over index.md.

Run script/cibuild
Configuration file: /home/runner/work/github-pages-themes-merlot/github-pages-themes-merlot/_config.yml
 Theme Config file: /home/runner/work/github-pages-themes-merlot/github-pages-themes-merlot/_config.yml
            Source: /home/runner/work/github-pages-themes-merlot/github-pages-themes-merlot
       Destination: /home/runner/work/github-pages-themes-merlot/github-pages-themes-merlot/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
                    done in 0.251 seconds.
 Auto-regeneration: disabled. Use --watch to enable.
NOTE: nokogumbo: Using Nokogiri::HTML5 provided by Nokogiri. See sparklemotion/nokogiri/issues/2205 for more information.
Running ["ScriptCheck", "LinkCheck", "ImageCheck", "HtmlCheck"] on ["./_site"] on *.html... 


Checking 4 external links...
Ran on 2 files!


HTML-Proofer finished successfully.
Inspecting 3 files
...

3 files inspected, no offenses detected
Checking index.html...
ERROR; line 9: Bad value “handheld, only screen and (max-device-width:640px)” for attribute “media” on element “link”: The media “handheld” has been deprecated
ERROR; line 10: Bad value “handheld, only screen and (max-device-width:640px)” for attribute “media” on element “link”: The media “handheld” has been deprecated
ERROR; line 56: Element “h1” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
ERROR; line 57: Element “h2” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Error: Process completed with exit code 1.