chore: sync content to repo (#10028)

Co-authored-by: nilbuild <4921183+nilbuild@users.noreply.github.com>

Author: github-actions[bot]

src/data/roadmaps/html/content/doctype@VscH3rVqpX29vaKmdCMop.md

@@ -4,6 +4,6 @@ The `<!DOCTYPE>` declaration is an instruction to the web browser about the HTML
 
 Visit the following resources to learn more:
 
-- [@article@Doctype | MDN docs](https://developer.mozilla.org/en-US/docs/Glossary/Doctype)
+- [@article@Doctype | DMN docs](https://developer.mozilla.org/en-US/docs/Glossary/Doctype)
 - [@article@What is the DOCTYPE Declaration in HTML?](https://www.freecodecamp.org/news/what-is-the-doctype-declaration-in-html/)
 - [@video@HTML DOCTYPE | Standards vs Quirks mode | HTML 5 Tutorial](https://www.youtube.com/watch?v=G1MOlh5uJYE)

src/data/roadmaps/html/content/introduction@JkLec2vSBMFAUc1Dzra-L.md

@@ -4,7 +4,6 @@ HTML, or HyperText Markup Language, is the standard language for creating web pa
 
 Visit the following resources to learn more:
 
-- [@book@HTML & CSS: design and build websites](https://sites.math.duke.edu/courses/math_everywhere/assets/techRefs/HTML%20and%20CSS-%20Design%20and%20Build%20Websites_Jon%20Duckett_2011.pdf)
 - [@article@HTML MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTML)
 - [@article@What is HTML – Definition and Meaning of Hypertext Markup Language](https://www.freecodecamp.org/news/what-is-html-definition-and-meaning/)
 - [@video@HTML Tutorial for Beginners: HTML Crash Course](https://www.youtube.com/watch?v=qz0aGYrrlhU)

src/data/roadmaps/html/content/s@Hx8mfbfkvRrBqLypE_NL3.md

@@ -4,5 +4,4 @@ The `<s>` element in HTML represents content that is no longer accurate or relev
 
 Visit the following resources to learn more:
 
-- [@article@<s>: The Strikethrough element](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/s)
 - [@article@HTML s Tag: How it Works with Examples](https://flatcoding.com/tutorials/html/html-s-tag-how-it-works-with-examples/)

src/data/roadmaps/html/content/whitespaces@IUsaaRxiuOn3y9uYbpsJ0.md

@@ -4,5 +4,5 @@ Whitespaces in HTML refer to the spaces, tabs, and line breaks that are used to
 
 Visit the following resources to learn more:
 
-- [@article@Handling whitespace | MDN docs](https://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Text/Whitespace)
+- [@article@Handling whitespace | DMN docs](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_text/Whitespace)
 - [@video@Whitespace in HTML](https://www.youtube.com/watch?v=XhItAZTTSR8)