stop calling spans scopes

classes/digest.php

@@ -2,7 +2,7 @@
 class Digest
 {
 	static function send_headlines_digests(): void {
-		$scope = Tracer::start(__METHOD__);
+		$span = Tracer::start(__METHOD__);
 
 		$user_limit = 15; // amount of users to process (e.g. emails to send out)
 		$limit = 1000; // maximum amount of headlines to include
@@ -77,7 +77,7 @@ class Digest
 			}
 		}
 
-		$scope->end();
+		$span->end();
 		Debug::log("All done.");
 	}