Update logstash-core/src/main/java/org/logstash/plugins/discovery/PluginRegistry.java

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: jsvd

logstash-core/src/main/java/org/logstash/plugins/discovery/PluginRegistry.java

@@ -41,7 +41,7 @@
 
 /**
  * Registry for built-in Java plugins (not installed via logstash-plugin).
- * This is singleton ofr two reasons:
+ * This is singleton for two reasons:
  * <ul>
  *  <li>it's a registry so no need for multiple instances</li>
  *  <li>plugin discovery touches the classpath, so we keep it single-threaded</li>