revised of node id duplication

data/1.C语言初阶/config.json

 {
-  "node_id": "8699564e59bd4972a2aae85e7e198c4d",
+  "node_id": "97bc6d47966c47979a9c78cc36741ade",
   "keywords": []
 }
\ No newline at end of file

data/2.C语言中阶/config.json

 {
-  "node_id": "a311b31b4bda403f99963cffd92e6306",
+  "node_id": "0b3c295f0ba24708845505ee4583303e",
   "keywords": []
 }
\ No newline at end of file

data/3.C语言高阶/config.json

 {
-  "node_id": "307890a9cb4543b08f52b4b0a7fe9933",
+  "node_id": "29426c5de15a472ba147b32bd24b73a5",
   "keywords": []
 }
\ No newline at end of file

data/tree.json

@@ -5,7 +5,7 @@
     "children": [
       {
         "C语言初阶": {
-          "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
+          "node_id": "97bc6d47966c47979a9c78cc36741ade",
           "keywords": [],
           "children": [
             {
@@ -856,7 +856,7 @@
       },
       {
         "C语言中阶": {
-          "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
+          "node_id": "0b3c295f0ba24708845505ee4583303e",
           "keywords": [],
           "children": [
             {
@@ -1142,7 +1142,7 @@
       },
       {
         "C语言高阶": {
-          "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
+          "node_id": "29426c5de15a472ba147b32bd24b73a5",
           "keywords": [],
           "children": [
             {