Allow referrer info for outgoing links again (#2697)

It can actually be nice to show other websites that they are getting traffic
from prometheus.io. After deploying the new website, I noticed in my own
Plausible tracking for training.promlabs.com that I (supposedly) wasn't getting
traffic from prometheus.io anymore and was wondering for a second what was
going on.

Signed-off-by: Julius Volz <[email protected]>

Author: juliusv

src/app/support-training/page.tsx

@@ -51,7 +51,7 @@ const trainingProviders: ProviderCardProps[] = [
     name: "KodeKloud",
     logo: "/assets/commercial-support-logos/kodekloud-logo.svg",
     url: "https://kodekloud.com/courses/prometheus-certified-associate-pca/",
-  }
+  },
 ];
 
 const commercialSupportProviders: ProviderCardProps[] = [
@@ -165,7 +165,7 @@ function ProviderCard({
     <a
       href={url}
       target="_blank"
-      rel="noopener noreferrer"
+      rel="noopener"
       style={{ textDecoration: "none" }}
     >
       <Card

src/components/PromMarkdown.tsx

@@ -139,7 +139,7 @@ export default async function PromMarkdown({
                 {...rest}
                 href={href}
                 target="_blank"
-                rel="noopener noreferrer"
+                rel="noopener"
               >
                 {/* Only add the icon if the first child is a string. This is to avoid
                 breaking the layout of other components like image links etc. */}