fix: consistent links for zarf-injector and zarf-seed-registry

- Updated the links for zarf-injector and zarf-seed-registry to point to the 'zarf-injector and zarf-seed-registry' section.

site/src/content/docs/ref/init-package.mdx

@@ -32,8 +32,8 @@ View all init options w/ [`zarf init --help`](/commands/zarf_init/).
 
 An 'init' package requires a series of specially named, and configured components to ensure the cluster is correctly initialized. These components are:
 
-- [`zarf-injector`](#zarf-injector)
-- [`zarf-seed-registry`](#zarf-seed-registry)
+- [`zarf-injector`](#zarf-injector-and-zarf-seed-registry)
+- [`zarf-seed-registry`](#zarf-injector-and-zarf-seed-registry)
 - [`zarf-registry`](#zarf-registry)
 - [`zarf-agent`](#zarf-agent)