style:修改知识库和培训管理部分样式

src/modules/plan-manage/modal/relatedCourseModal.less

 .related-course-modal {
   .ant-tabs-tab.ant-tabs-tab-active .ant-tabs-tab-btn {
-    font-weight: normal;
+    font-weight: 500;
   }
   // .ant-tabs-nav .ant-tabs-tab {
   //   padding: 6px 12px !important;
@@ -48,14 +48,14 @@
     .select-box {
       display: inline-box;
       width: 186px;
-      background: #fff4dd;
+      background: #e9efff;
       border-radius: 4px;
       padding: 6px 16px;
       margin-right: 8px;
       display: flex;
       justify-content: space-between;
       .tip-icon {
-        color: #ff9d14;
+        color: #2966ff;
         font-size: 14px;
         margin-right: 4px;
       }
@@ -71,7 +71,7 @@
     }
     .related-box {
       padding: 6px 16px;
-      background: #fff4dd;
+      background: #e9efff;
       border-radius: 4px;
       flex: 1;
       color: #666666;