Fixed link to "Journey to HTTP/2" article (#1364)

I noticed a single forwardslash broke the link for the "Journey to HTTP/2" article. Same as commit 668c9b7 but for the front-end roadmap.

content/roadmaps/100-frontend/content/100-internet/101-what-is-http.md

@@ -5,6 +5,6 @@ HTTP is the `TCP/IP` based application layer communication protocol which standa
 <ResourceGroupTitle>Free Content</ResourceGroupTitle>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.cloudflare.com/en-gb/learning/ddos/glossary/hypertext-transfer-protocol-http/'>What is HTTP?</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://developer.mozilla.org/en-US/docs/Web/HTTP/Overview'>An overview of HTTP</BadgeLink>
-<BadgeLink colorScheme='yellow' badgeText='Read' href='https://kamranahmed.info/blog/2016/08/13/http-in-depth/'>Journey to HTTP/2</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://kamranahmed.info/blog/2016/08/13/http-in-depth'>Journey to HTTP/2</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.smashingmagazine.com/2021/08/http3-core-concepts-part1/'>HTTP/3 From A To Z: Core Concepts</BadgeLink>
 <BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=iYM2zFP3Zn0'>HTTP Crash Course & Exploration</BadgeLink>