Fix typo in html.md (#54)

* Fix typo in html.md

* Update html.md

front-end/html.md

@@ -1,7 +1,7 @@
 HTML
 ==
 
-HTML (Hypertext Markup Language) is the structure that all websites are built on. Anyone working on websites and webapps should have a basic understanding of HTML at the very least. A helpfull analogy for understanding the importance of HTML is the house scenario. When building a new house, the process can be split into a few key areas; strucute (HTML), aesthetics (CSS) and furniture (Content). The HTML is your basic page structure, without the structure, you cannot change how it looks using CSS, or what content is on the page.
+HTML (Hypertext Markup Language) is the structure that all websites are built on. Anyone working on websites and webapps should have a basic understanding of HTML at the very least. A helpful analogy for understanding the importance of HTML is the house scenario. When building a new house, the process can be split into a few key areas; structure (HTML), aesthetics (CSS) and furniture (Content). The HTML is your basic page structure, without the structure, you cannot change how it looks using CSS, or what content is on the page.
 
 ## Glossary