Update spellcheck and markdown link checker

[wesley-dean-gsa]

Changes proposed in this pull request

This ignores the {{ ... | url }} patterns and references to localhost for the markdown link checker. It also adds HSPD to the spellechecker.

security considerations

None

[github-actions[bot]]

Pa11y testing results

``` Welcome to Pa11y > Running Pa11y on URL https://federalist-a2423046-fe43-4e75-a2ef-2651e5e123ca.sites.pages.cloud.gov/preview/gsa-tts/tts.gsa.gov//update_cspell/ No issues found! ```

[github-actions[bot]]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	4		0	0.09s
✅ BASH	shellcheck	1		0	0.1s
✅ BASH	shfmt	1	0	0	0.24s
⚠️ CSS	scss-lint	2		1	3.14s
✅ JAVASCRIPT	prettier	6	0	0	1.08s
⚠️ JSON	jsonlint	7		1	0.23s
✅ JSON	npm-package-json-lint	yes		no	0.58s
⚠️ JSON	prettier	7	0	1	1.19s
✅ JSON	v8r	7		0	14.35s
⚠️ MARKDOWN	markdownlint	21	0	10	2.09s
⚠️ MARKDOWN	markdown-link-check	21		1	0.55s
✅ MARKDOWN	markdown-table-formatter	21	0	0	0.41s
✅ REPOSITORY	checkov	yes		no	15.91s
✅ REPOSITORY	gitleaks	yes		no	0.2s
✅ REPOSITORY	git_diff	yes		no	0.24s
✅ REPOSITORY	grype	yes		no	13.68s
✅ REPOSITORY	secretlint	yes		no	2.89s
✅ REPOSITORY	trivy	yes		no	7.61s
✅ REPOSITORY	trivy-sbom	yes		no	1.32s
✅ REPOSITORY	trufflehog	yes		no	4.21s
⚠️ SPELL	cspell	21		10	3.68s
✅ YAML	prettier	14	0	0	1.29s
✅ YAML	v8r	11		0	19.4s
✅ YAML	yamllint	14		0	0.5s

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