Fix Go comment and link

codes/go/chapter_heap/top_k.go

@@ -30,6 +30,7 @@ func (h *minHeap) Top() any {
 	return (*h)[0]
 }
 
+/* 基于堆查找数组中最大的 k 个元素 */
 func topKHeap(nums []int, k int) *minHeap {
 	h := &minHeap{}
 	heap.Init(h)

docs/chapter_dynamic_programming/intro_to_dynamic_programming.md

@@ -256,7 +256,7 @@ $$
 === "Go"
 
     ```go title="climbing_stairs_dfs_mem.go"
-    [class]{}-[func]{dfs}
+    [class]{}-[func]{dfsMem}
 
     [class]{}-[func]{climbingStairsDFSMem}
     ```

docs/chapter_greedy/fractional_knapsack_problem.md

@@ -58,7 +58,7 @@
 === "Go"
 
     ```go title="fractional_knapsack.go"
-    [class]{}-[func]{II}
+    [class]{Item}-[func]{}
 
     [class]{}-[func]{fractionalKnapsack}
     ```

docs/chapter_heap/top_k.md

@@ -87,7 +87,7 @@
 === "Go"
 
     ```go title="top_k.go"
-    [class]{maxHeap}-[func]{topKHeap}
+    [class]{}-[func]{topKHeap}
     ```
 
 === "JavaScript"
@@ -105,7 +105,7 @@
 === "C"
 
     ```c title="top_k.c"
-    [class]{maxHeap}-[func]{topKHeap}
+    [class]{}-[func]{topKHeap}
     ```
 
 === "C#"