Update 102-naming-rules.md (#1761)

* Update 102-naming-rules.md

JavaScript Style Guide

* Update content/roadmaps/106-javascript/content/101-javascript-variables/102-naming-rules.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/106-javascript/content/101-javascript-variables/102-naming-rules.md

@@ -6,5 +6,6 @@ A variable name should accurately identify your variable. When you create good v
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.informit.com/articles/article.aspx?p=131025&seqNum=3'>Understanding Variables in JavaScript</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.dummies.com/article/technology/programming-web-design/javascript/naming-javascript-variables-142522/'>Naming JavaScript Variables</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.robinwieruch.de/javascript-naming-conventions/'>JavaScript Naming Conventions</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://google.github.io/styleguide/jsguide.html'>Google JavaScript Style Guide</BadgeLink>