Fix formatting issues in StreamHelper.java

Author: cowboysj

models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/StreamHelper.java

@@ -54,8 +54,8 @@
 public class StreamHelper {
 
 	public boolean isToolUseStart(StreamEvent event) {
-    if (isInvalidEvent(event, EventType.CONTENT_BLOCK_START)) {
-        return false;
+    	if (isInvalidEvent(event, EventType.CONTENT_BLOCK_START)) {
+        	return false;
     }
     ContentBlockStartEvent contentBlockStartEvent = (ContentBlockStartEvent) event;
     	return ContentBlock.Type.TOOL_USE.getValue().equals(contentBlockStartEvent.contentBlock().type());