feat: add array C docs (#352)

* feat: add arry C docs

* fix: change remove to removeItem

* Update array.md

---------

Co-authored-by: Yudong Jin <krahets@163.com>

docs/chapter_array_and_linkedlist/array.md

@@ -70,7 +70,8 @@ comments: true
 === "C"
 
     ```c title="array.c"
-    
+    int arr[5] = { 0 }; // { 0, 0, 0, 0, 0 }
+    int nums[5] = { 1, 3, 2, 5, 4 };
     ```
 
 === "C#"
@@ -153,7 +154,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "C"
 
     ```c title="array.c"
-    
+    [class]{}-[func]{randomAccess}
     ```
 
 === "C#"
@@ -217,7 +218,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "C"
 
     ```c title="array.c"
-    
+    [class]{}-[func]{extend}
     ```
 
 === "C#"
@@ -299,7 +300,9 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "C"
 
     ```c title="array.c"
+    [class]{}-[func]{insert}
 
+    [class]{}-[func]{removeItem}
     ```
 
 === "C#"
@@ -369,7 +372,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "C"
 
     ```c title="array.c"
-    
+    [class]{}-[func]{traverse}
     ```
 
 === "C#"
@@ -431,7 +434,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "C"
 
     ```c title="array.c"
-    
+    [class]{}-[func]{find}
     ```
 
 === "C#"