Fix grammatical error in attr-value-double-quotes rule documentation

[Copilot]

Corrected missing word "be" in the attr-value-double-quotes rule description.

Changes

• test/cli/formatters/sarif.sarif: Updated markdown help text from "Attribute value must closed by double quotes" to "Attribute value must be closed by double quotes"
• website/src/content/docs/rules/attr-value-double-quotes.mdx: Applied same correction to source documentation

The error appeared in both the SARIF test fixture and the rule's documentation page, affecting the generated SARIF output and user-facing docs.

Original prompt

Please apply the following diffs and create a pull request.
Once the PR is ready, give it a title based on the messages of the fixes being applied.

[{"message":"The text \"Attribute value must closed by double quotes\" is missing the word \"be\" - it should read \"Attribute value must be closed by double quotes.\"","fixFiles":[{"filePath":"test/cli/formatters/sarif.sarif","diff":"diff --git a/test/cli/formatters/sarif.sarif b/test/cli/formatters/sarif.sarif\n--- a/test/cli/formatters/sarif.sarif\n+++ b/test/cli/formatters/sarif.sarif\n@@ -15,7 +15,7 @@\n               \"helpUri\": \"https://htmlhint.com/rules/attr-value-double-quotes\",\n               \"help\": {\n                 \"text\": \"Attribute values must be in double quotes.\",\n-                \"markdown\": \"\\nAttribute value must closed by double quotes.\\n\\nLevel: Error\\n\\n## Config value\\n\\n- `true`: enable rule\\n- `false`: disable rule\\n\\n### The following patterns are **not** considered rule violations\\n\\n```html\\n`<a href=\\\"\\\" title=\\\"abc\\\">``</a>`\\n```\\n\\n### The following pattern is considered a rule violation:\\n\\n```html\\n`<a href='' title='abc'>``</a>`\\n```\"\n+                \"markdown\": \"\\nAttribute value must be closed by double quotes.\\n\\nLevel: Error\\n\\n## Config value\\n\\n- `true`: enable rule\\n- `false`: disable rule\\n\\n### The following patterns are **not** considered rule violations\\n\\n```html\\n`<a href=\\\"\\\" title=\\\"abc\\\">``</a>`\\n```\\n\\n### The following pattern is considered a rule violation:\\n\\n```html\\n`<a href='' title='abc'>``</a>`\\n```\"\n               }\n             },\n             {\n"}]}]

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View logs

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (95e6a13) to head (fb1f366).
⚠️ Report is 161 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #1755      +/-   ##
===========================================
+ Coverage   96.99%   100.00%   +3.00%     
===========================================
  Files           2         1       -1     
  Lines        1628         1    -1627     
  Branches      335         0     -335     
===========================================
- Hits         1579         1    -1578     
+ Misses         49         0      -49     

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