[3.13] gh-121367: [doc] BUILD_TUPLE arg can be 0 (GH-122663) (#122683)

gh-121367: [doc] BUILD_TUPLE arg can be 0 (GH-122663)
(cherry picked from commit 1422500)

Co-authored-by: Irit Katriel <[email protected]>

Author: miss-islington

Doc/library/dis.rst

@@ -1102,11 +1102,15 @@ iterations of the loop.
 .. opcode:: BUILD_TUPLE (count)
 
    Creates a tuple consuming *count* items from the stack, and pushes the
-   resulting tuple onto the stack.::
+   resulting tuple onto the stack::
 
-      assert count > 0
-      STACK, values = STACK[:-count], STACK[-count:]
-      STACK.append(tuple(values))
+      if count == 0:
+          value = ()
+      else:
+          STACK = STACK[:-count]
+          value = tuple(STACK[-count:])
+
+      STACK.append(value)
 
 
 .. opcode:: BUILD_LIST (count)