Shortened the BinaryHeap::is_full example

Author: sourcebox

src/binary_heap.rs

@@ -267,18 +267,14 @@ where
     /// ```
     /// use heapless::binary_heap::{BinaryHeap, Max};
     ///
-    /// let mut heap: BinaryHeap<_, Max, 8> = BinaryHeap::new();
+    /// let mut heap: BinaryHeap<_, Max, 4> = BinaryHeap::new();
     ///
     /// assert!(!heap.is_full());
     ///
     /// heap.push(1).unwrap();
     /// heap.push(2).unwrap();
     /// heap.push(3).unwrap();
     /// heap.push(4).unwrap();
-    /// heap.push(5).unwrap();
-    /// heap.push(6).unwrap();
-    /// heap.push(7).unwrap();
-    /// heap.push(8).unwrap();
     ///
     /// assert!(heap.is_full());
     /// ```