fix bug

data/1.gml初阶/2.MarkDown入门/8.代码块/learn.md

@@ -21,19 +21,17 @@
 ### B
 
 ````bash
-多行代码块
-```diff
+```hack_diff
 var foo = 'bar';
 + var x = 200;
 * var x = 100;
-```
-```
+```hack_
+````
 
 ### C
 
 ````bash
-多行代码块
-```python
+```hack_python
 def fibo(max):
     n, a, b = 0, 0, 1
     while n < max:
@@ -42,5 +40,5 @@ def fibo(max):
         n = n + 1  
 for n in fibo(10):
     print (n)
-```
-```
+```hack_
+````

data/1.gml初阶/2.MarkDown入门/9.表格/learn.md

@@ -27,18 +27,18 @@
 
 ````bash
 | header 1 | header 2 | header 3 |
-| ---      |  ------  |---------:|
+| --- |  ------  |---------:|
 | cell 1   | cell 2   | cell 3   |
-| cell 4 | cell 5 is longer | cell 6 |
-| cell 7   |          | cell <br> 9 |
+| cell 4 | cell 5 | cell 6 |
+| cell 7   |    | cell <br> 9 |
 ````
 
 ### C
 
 ````bash
 | header 1 | header 2 | header 3 |
-| :---      |  :------:  |---------:|
+| :--- |  :------:  |---------:|
 | cell 1   | cell 2   | cell 3   |
 | cell 4 | cell 5  | cell 6 |
-| cell 7   |          | cell <br> 9 |
+| cell 7   |   | cell <br> 9 |
 ````