Add GitHub Doc Link (#1859)

docs/adding-servers/overview.mdx

@@ -2,7 +2,7 @@ import { Callout } from "nextra-theme-docs";
 
 # Overview
 
-You can add your server to Server Mappings by creating a pull request to the [ServerMappings repository](https://github.com/LunarClient/ServerMappings) following the guidelines detailed here.
+You can add your server to Server Mappings by [creating a pull request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request-from-a-fork) to the [ServerMappings repository](https://github.com/LunarClient/ServerMappings) following the guidelines detailed here.
 
 <Callout type="warning" emoji="⚠️">
     We ask that this repository is only used to store mappings for *public* Minecraft servers. Some server IPs, such as private SMPs, tournament servers, etc. should not be listed in this repository, out of respect for privacy.