refactor(module-llm):优化日志打印异常信息并规范代码格式

- 在 catch块中，将异常日志改为打印异常消息，提高日志可读性
- 在 getParagraphHitRate 方法中，调整参数间的空格，保持代码整洁

yudao-module-llm/yudao-module-llm-biz/src/main/java/cn/iocoder/yudao/module/llm/controller/admin/conversation/ConversationController.java

@@ -136,7 +136,7 @@ public class ConversationController {
                 conversationService.chatStream(chatReqVO, emitter, response);
                 emitter.complete();
             } catch (Exception e) {
-                log.error("处理对话推理请求时发生异常", e);
+                log.error("处理对话推理请求时发生异常:{}", e.getMessage());
                 try {
                     emitter.completeWithError(e);
                 } catch (Exception ex) {
@@ -144,6 +144,7 @@ public class ConversationController {
                 }
             }
         });
+
         return emitter;
     }
 
@@ -151,7 +152,7 @@ public class ConversationController {
     @Operation(summary = "获得大模型对话记录分页")
     @PreAuthorize("@ss.hasPermission('llm:conversation:query')")
     public CommonResult<ParagraphHitRateListVO> getParagraphHitRate (@Valid String uuid, @Valid String groupId) {
-        return success(conversationService.getParagraphHitRate(uuid,groupId));
+        return success(conversationService.getParagraphHitRate(uuid, groupId));
     }
 
     @PostMapping("/text-to-image")