refactor: use constant for max staff rating

php/servers/servers-rooms.php

@@ -722,14 +722,22 @@
 			return $staff_count >= $this->get_recommended_staff_count();
 		}
 
+		const MAX_STAFF_RATING = 2;
+
 		/**
 		 * Return a rating for the Community's staff count relative to active users.
 		 *
 		 * @return float
 		 */
 		public function get_numeric_staff_rating(): float {
-			if (!$this->write || !$this->read) return 2;
-			return min(2, $this->get_staff_count() / $this->get_recommended_staff_count());
+			if (!$this->write || !$this->read) {
+				return CommunityRoom::MAX_STAFF_RATING;
+			}
+
+			return min(
+				CommunityRoom::MAX_STAFF_RATING,
+				$this->get_staff_count() / $this->get_recommended_staff_count()
+			);
 		}
 
 		/**