实践路径简介和须知文字限制调整

public/react/src/modules/paths/PathNew.js

@@ -107,7 +107,7 @@ class PathNew extends Component{
       window.location.href="#part_Des";
       return;
     }
-    if (des.length > 5000) {
+    if (des.length > 8000) {
       this.props.showSnackbar("实践课程的简介最大限制5000个字符");
       window.location.href="#part_Des";
       return;
@@ -118,7 +118,7 @@ class PathNew extends Component{
       window.location.href="#part_point";
       return;
     }
-    if(point.length > 500){
+    if(point.length > 2000){
       this.props.showSnackbar("实践课程的学习须知最大限制500个字符");
       window.location.href="#part_point";
       return;